diff --git a/Cargo.toml b/Cargo.toml
index 0c881467..6ccca4cc 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -9,6 +9,7 @@ edition = "2021"
 actix-web = "4.3.1"
 actix-rt = "2.8.0"
 actix-files = "0.6.2"
+actix-multipart = "0.4"
 postgres = "0.19.7"
 sea-orm = {version = "0.12.9", features = ["sqlx-postgres", "runtime-tokio-native-tls", "macros"]}
 serde = { version = "1", features = ["derive"] }
@@ -18,6 +19,7 @@ dotenvy = "0.15.7"
 listenfd = "1.0.1"
 chrono = "0.4.31"
 migration = { path = "./migration" }
+futures-util = "0.3.29"
 
 [[bin]]
 name = "doc_gpt"
diff --git a/migration/src/m20220101_000001_create_table.rs b/migration/src/m20220101_000001_create_table.rs
index 4269fdcf..928a1e61 100644
--- a/migration/src/m20220101_000001_create_table.rs
+++ b/migration/src/m20220101_000001_create_table.rs
@@ -130,6 +130,7 @@ impl MigrationTrait for Migration {
                         .primary_key())
                     .col(ColumnDef::new(DocInfo::Uid).big_integer().not_null())
                     .col(ColumnDef::new(DocInfo::DocName).string().not_null())
+                    .col(ColumnDef::new(DocInfo::Location).string().not_null())
                     .col(ColumnDef::new(DocInfo::Size).big_integer().not_null())
                     .col(ColumnDef::new(DocInfo::Type).string().not_null()).comment("doc|folder")
                     .col(ColumnDef::new(DocInfo::KbProgress).float().default(0))
@@ -280,6 +281,7 @@ enum DocInfo {
     Did,
     Uid,
     DocName,
+    Location,
     Size,
     Type,
     KbProgress,
diff --git a/src/api/dialog_info.rs b/src/api/dialog_info.rs
new file mode 100644
index 00000000..da81dedd
--- /dev/null
+++ b/src/api/dialog_info.rs
@@ -0,0 +1,77 @@
+use std::collections::HashMap;
+use actix_web::{get, HttpResponse, post, web};
+use actix_web::http::Error;
+use crate::api::JsonResponse;
+use crate::AppState;
+use crate::entity::dialog_info;
+use crate::service::dialog_info::Query;
+use crate::service::dialog_info::Mutation;
+
+#[get("/v1.0/dialogs")]
+async fn list(model: web::Json<dialog_info::Model>, data: web::Data<AppState>) -> Result<HttpResponse, Error> {
+    let dialogs = Query::find_dialog_infos_by_uid(&data.conn, model.uid).await.unwrap();
+
+    let mut result = HashMap::new();
+    result.insert("dialogs", dialogs);
+
+    let json_response = JsonResponse {
+        code: 200,
+        err: "".to_owned(),
+        data: result,
+    };
+
+    Ok(HttpResponse::Ok()
+        .content_type("application/json")
+        .body(serde_json::to_string(&json_response).unwrap()))
+}
+
+#[get("/v1.0/dialog")]
+async fn detail(model: web::Json<dialog_info::Model>, data: web::Data<AppState>) -> Result<HttpResponse, Error> {
+    let dialogs = Query::find_dialog_info_by_id(&data.conn, model.dialog_id).await.unwrap();
+
+    let mut result = HashMap::new();
+    result.insert("dialogs", dialogs);
+
+    let json_response = JsonResponse {
+        code: 200,
+        err: "".to_owned(),
+        data: result,
+    };
+
+    Ok(HttpResponse::Ok()
+        .content_type("application/json")
+        .body(serde_json::to_string(&json_response).unwrap()))
+}
+
+#[post("/v1.0/delete_dialog")]
+async fn delete(model: web::Json<dialog_info::Model>, data: web::Data<AppState>) -> Result<HttpResponse, Error> {
+    let _ = Mutation::delete_dialog_info(&data.conn, model.dialog_id).await.unwrap();
+
+    let json_response = JsonResponse {
+        code: 200,
+        err: "".to_owned(),
+        data: (),
+    };
+
+    Ok(HttpResponse::Ok()
+        .content_type("application/json")
+        .body(serde_json::to_string(&json_response).unwrap()))
+}
+
+#[post("/v1.0/create_kb")]
+async fn create(model: web::Json<dialog_info::Model>, data: web::Data<AppState>) -> Result<HttpResponse, Error> {
+    let model = Mutation::create_dialog_info(&data.conn, model.into_inner()).await.unwrap();
+
+    let mut result = HashMap::new();
+    result.insert("dialog_id", model.dialog_id.unwrap());
+
+    let json_response = JsonResponse {
+        code: 200,
+        err: "".to_owned(),
+        data: result,
+    };
+
+    Ok(HttpResponse::Ok()
+        .content_type("application/json")
+        .body(serde_json::to_string(&json_response).unwrap()))
+}
\ No newline at end of file
diff --git a/src/api/doc_info.rs b/src/api/doc_info.rs
new file mode 100644
index 00000000..da6079c8
--- /dev/null
+++ b/src/api/doc_info.rs
@@ -0,0 +1,127 @@
+use std::collections::HashMap;
+use actix_multipart::Multipart;
+use actix_web::{get, HttpResponse, post, web};
+use actix_web::http::Error;
+use chrono::Local;
+use futures_util::{AsyncWriteExt, StreamExt};
+use serde::Deserialize;
+use std::io::Write;
+use crate::api::JsonResponse;
+use crate::AppState;
+use crate::entity::doc_info::Model;
+use crate::service::doc_info::{Mutation, Query};
+
+#[derive(Debug, Deserialize)]
+pub struct Params {
+    pub uid: i64,
+    pub filter: FilterParams,
+    pub sortby: String,
+    pub page: u64,
+    pub per_page: u64,
+}
+
+#[derive(Debug, Deserialize)]
+pub struct FilterParams {
+    pub keywords: Option<String>,
+    pub folder_id: Option<i64>,
+    pub tag_id: Option<i64>,
+    pub kb_id: Option<i64>,
+}
+
+#[derive(Debug, Deserialize)]
+pub struct MvParams {
+    pub dids: Vec<i64>,
+    pub dest_did: i64,
+}
+
+#[get("/v1.0/docs")]
+async fn list(params: web::Json<Params>, data: web::Data<AppState>) -> Result<HttpResponse, Error> {
+    let docs = Query::find_doc_infos_by_params(&data.conn, params.into_inner())
+        .await
+        .unwrap();
+
+    let mut result = HashMap::new();
+    result.insert("docs", docs);
+
+    let json_response = JsonResponse {
+        code: 200,
+        err: "".to_owned(),
+        data: result,
+    };
+
+    Ok(HttpResponse::Ok()
+        .content_type("application/json")
+        .body(serde_json::to_string(&json_response).unwrap()))
+}
+
+#[post("/v1.0/upload")]
+async fn upload(mut payload: Multipart, filename: web::Data<String>, did: web::Data<i64>, uid: web::Data<i64>, data: web::Data<AppState>) -> Result<HttpResponse, Error> {
+    let mut size = 0;
+
+    while let Some(item) = payload.next().await {
+        let mut field = item.unwrap();
+
+        let filepath = format!("./uploads/{}", filename.as_str());
+
+        let mut file = web::block(|| std::fs::File::create(filepath))
+            .await
+            .unwrap()
+            .unwrap();
+
+        while let Some(chunk) = field.next().await {
+            let data = chunk.unwrap();
+            size += data.len() as u64;
+            file = web::block(move || file.write_all(&data).map(|_| file))
+                .await
+                .unwrap()
+                .unwrap();
+        }
+    }
+
+    let _ = Mutation::create_doc_info(&data.conn, Model {
+        did: *did.into_inner(),
+        uid: *uid.into_inner(),
+        doc_name: filename.to_string(),
+        size,
+        kb_infos: Vec::new(),
+        kb_progress: 0.0,
+        location: "".to_string(),
+        r#type: "".to_string(),
+        created_at: Local::now().date_naive(),
+        updated_at: Local::now().date_naive(),
+    }).await.unwrap();
+
+    Ok(HttpResponse::Ok().body("File uploaded successfully"))
+}
+
+#[post("/v1.0/delete_docs")]
+async fn delete(doc_ids: web::Json<Vec<i64>>, data: web::Data<AppState>) -> Result<HttpResponse, Error> {
+    for doc_id in doc_ids.iter() {
+        let _ = Mutation::delete_doc_info(&data.conn, *doc_id).await.unwrap();
+    }
+
+    let json_response = JsonResponse {
+        code: 200,
+        err: "".to_owned(),
+        data: (),
+    };
+
+    Ok(HttpResponse::Ok()
+        .content_type("application/json")
+        .body(serde_json::to_string(&json_response).unwrap()))
+}
+
+#[post("/v1.0/mv_docs")]
+async fn mv(params: web::Json<MvParams>, data: web::Data<AppState>) -> Result<HttpResponse, Error> {
+    Mutation::mv_doc_info(&data.conn, params.dest_did, &params.dids).await.unwrap();
+
+    let json_response = JsonResponse {
+        code: 200,
+        err: "".to_owned(),
+        data: (),
+    };
+
+    Ok(HttpResponse::Ok()
+        .content_type("application/json")
+        .body(serde_json::to_string(&json_response).unwrap()))
+}
\ No newline at end of file
diff --git a/src/api/kb_info.rs b/src/api/kb_info.rs
new file mode 100644
index 00000000..d6867957
--- /dev/null
+++ b/src/api/kb_info.rs
@@ -0,0 +1,59 @@
+use std::collections::HashMap;
+use actix_web::{get, HttpResponse, post, web};
+use actix_web::http::Error;
+use crate::api::JsonResponse;
+use crate::AppState;
+use crate::entity::kb_info;
+use crate::service::kb_info::Mutation;
+use crate::service::kb_info::Query;
+
+#[post("/v1.0/create_kb")]
+async fn create(model: web::Json<kb_info::Model>, data: web::Data<AppState>) -> Result<HttpResponse, Error> {
+    let model = Mutation::create_kb_info(&data.conn, model.into_inner()).await.unwrap();
+
+    let mut result = HashMap::new();
+    result.insert("kb_id", model.kb_id.unwrap());
+
+    let json_response = JsonResponse {
+        code: 200,
+        err: "".to_owned(),
+        data: result,
+    };
+
+    Ok(HttpResponse::Ok()
+        .content_type("application/json")
+        .body(serde_json::to_string(&json_response).unwrap()))
+}
+
+#[get("/v1.0/kbs")]
+async fn list(model: web::Json<kb_info::Model>, data: web::Data<AppState>) -> Result<HttpResponse, Error> {
+    let kbs = Query::find_kb_infos_by_uid(&data.conn, model.uid).await.unwrap();
+
+    let mut result = HashMap::new();
+    result.insert("kbs", kbs);
+
+    let json_response = JsonResponse {
+        code: 200,
+        err: "".to_owned(),
+        data: result,
+    };
+
+    Ok(HttpResponse::Ok()
+        .content_type("application/json")
+        .body(serde_json::to_string(&json_response).unwrap()))
+}
+
+#[post("/v1.0/delete_kb")]
+async fn delete(model: web::Json<kb_info::Model>, data: web::Data<AppState>) -> Result<HttpResponse, Error> {
+    let _ = Mutation::delete_kb_info(&data.conn, model.kb_id).await.unwrap();
+
+    let json_response = JsonResponse {
+        code: 200,
+        err: "".to_owned(),
+        data: (),
+    };
+
+    Ok(HttpResponse::Ok()
+        .content_type("application/json")
+        .body(serde_json::to_string(&json_response).unwrap()))
+}
\ No newline at end of file
diff --git a/src/api/mod.rs b/src/api/mod.rs
index f8cf91d9..65f6a22d 100644
--- a/src/api/mod.rs
+++ b/src/api/mod.rs
@@ -1,6 +1,9 @@
 use serde::{Deserialize, Serialize};
 
 pub(crate) mod tag;
+pub(crate) mod kb_info;
+pub(crate) mod dialog_info;
+pub(crate) mod doc_info;
 
 #[derive(Debug, Deserialize, Serialize)]
 struct JsonResponse<T> {
diff --git a/src/entity/doc_info.rs b/src/entity/doc_info.rs
index 0f39a8d6..61e0a371 100644
--- a/src/entity/doc_info.rs
+++ b/src/entity/doc_info.rs
@@ -1,5 +1,6 @@
 use sea_orm::entity::prelude::*;
 use serde::{Deserialize, Serialize};
+use crate::entity::kb_info;
 
 #[derive(Clone, Debug, PartialEq, DeriveEntityModel, Deserialize, Serialize)]
 #[sea_orm(table_name = "doc_info")]
@@ -9,10 +10,13 @@ pub struct Model {
     #[sea_orm(index)]
     pub uid: i64,
     pub doc_name: String,
-    pub size: i64,
+    pub size: u64,
     #[sea_orm(column_name = "type")]
     pub r#type: String,
     pub kb_progress: f64,
+    pub location: String,
+    #[sea_orm(ignore)]
+    pub kb_infos: Vec<kb_info::Model>,
 
     #[serde(skip_deserializing)]
     pub created_at: Date,
diff --git a/src/entity/mod.rs b/src/entity/mod.rs
index bc48fdc1..6fbdee3c 100644
--- a/src/entity/mod.rs
+++ b/src/entity/mod.rs
@@ -3,7 +3,7 @@ pub(crate) mod tag_info;
 mod tag2_doc;
 mod kb2_doc;
 mod dialog2_kb;
-mod doc2_doc;
+pub(crate) mod doc2_doc;
 pub(crate) mod kb_info;
 pub(crate) mod doc_info;
 pub(crate) mod dialog_info;
\ No newline at end of file
diff --git a/src/service/dialog_info.rs b/src/service/dialog_info.rs
index b2f9f9d3..bdd1d6db 100644
--- a/src/service/dialog_info.rs
+++ b/src/service/dialog_info.rs
@@ -1,5 +1,9 @@
-use sea_orm::{DbConn, DbErr, EntityTrait, PaginatorTrait, QueryOrder};
-use crate::entity::dialog_info;
+use chrono::Local;
+use sea_orm::{ActiveModelTrait, DbConn, DbErr, DeleteResult, EntityTrait, PaginatorTrait, QueryOrder};
+use sea_orm::ActiveValue::Set;
+use sea_orm::QueryFilter;
+use sea_orm::ColumnTrait;
+use crate::entity::{dialog_info, kb_info};
 use crate::entity::dialog_info::Entity;
 
 pub struct Query;
@@ -9,6 +13,17 @@ impl Query {
         Entity::find_by_id(id).one(db).await
     }
 
+    pub async fn find_dialog_infos(db: &DbConn) -> Result<Vec<dialog_info::Model>, DbErr> {
+        Entity::find().all(db).await
+    }
+
+    pub async fn find_dialog_infos_by_uid(db: &DbConn, uid: i64) -> Result<Vec<dialog_info::Model>, DbErr> {
+        Entity::find()
+            .filter(dialog_info::Column::Uid.eq(uid))
+            .all(db)
+            .await
+    }
+
     pub async fn find_dialog_infos_in_page(
         db: &DbConn,
         page: u64,
@@ -23,4 +38,61 @@ impl Query {
         // Fetch paginated posts
         paginator.fetch_page(page - 1).await.map(|p| (p, num_pages))
     }
+}
+
+pub struct Mutation;
+
+impl Mutation {
+    pub async fn create_dialog_info(
+        db: &DbConn,
+        form_data: dialog_info::Model,
+    ) -> Result<dialog_info::ActiveModel, DbErr> {
+        dialog_info::ActiveModel {
+            dialog_id: Default::default(),
+            uid: Set(form_data.uid.to_owned()),
+            dialog_name: Set(form_data.dialog_name.to_owned()),
+            history: Set(form_data.history.to_owned()),
+            created_at: Set(Local::now().date_naive()),
+            updated_at: Set(Local::now().date_naive()),
+        }
+            .save(db)
+            .await
+    }
+
+    pub async fn update_dialog_info_by_id(
+        db: &DbConn,
+        id: i64,
+        form_data: dialog_info::Model,
+    ) -> Result<dialog_info::Model, DbErr> {
+        let dialog_info: dialog_info::ActiveModel = Entity::find_by_id(id)
+            .one(db)
+            .await?
+            .ok_or(DbErr::Custom("Cannot find.".to_owned()))
+            .map(Into::into)?;
+
+        dialog_info::ActiveModel {
+            dialog_id: dialog_info.dialog_id,
+            uid: dialog_info.uid,
+            dialog_name: Set(form_data.dialog_name.to_owned()),
+            history: Set(form_data.history.to_owned()),
+            created_at: Default::default(),
+            updated_at: Set(Local::now().date_naive()),
+        }
+            .update(db)
+            .await
+    }
+
+    pub async fn delete_dialog_info(db: &DbConn, kb_id: i64) -> Result<DeleteResult, DbErr> {
+        let tag: dialog_info::ActiveModel = Entity::find_by_id(kb_id)
+            .one(db)
+            .await?
+            .ok_or(DbErr::Custom("Cannot find.".to_owned()))
+            .map(Into::into)?;
+
+        tag.delete(db).await
+    }
+
+    pub async fn delete_all_dialog_infos(db: &DbConn) -> Result<DeleteResult, DbErr> {
+        Entity::delete_many().exec(db).await
+    }
 }
\ No newline at end of file
diff --git a/src/service/doc_info.rs b/src/service/doc_info.rs
new file mode 100644
index 00000000..f05685e3
--- /dev/null
+++ b/src/service/doc_info.rs
@@ -0,0 +1,154 @@
+use chrono::Local;
+use postgres::fallible_iterator::FallibleIterator;
+use sea_orm::{ActiveModelTrait, ColumnTrait, DbConn, DbErr, DeleteResult, EntityTrait, PaginatorTrait, QueryOrder};
+use sea_orm::ActiveValue::Set;
+use sea_orm::QueryFilter;
+use crate::api::doc_info::{FilterParams, Params};
+use crate::entity::{doc2_doc, doc_info, kb_info, tag_info};
+use crate::entity::doc_info::Entity;
+
+pub struct Query;
+
+impl Query {
+    pub async fn find_doc_info_by_id(db: &DbConn, id: i64) -> Result<Option<doc_info::Model>, DbErr> {
+        Entity::find_by_id(id).one(db).await
+    }
+
+    pub async fn find_doc_infos(db: &DbConn) -> Result<Vec<doc_info::Model>, DbErr> {
+        Entity::find().all(db).await
+    }
+
+    pub async fn find_doc_infos_by_uid(db: &DbConn, uid: i64) -> Result<Vec<doc_info::Model>, DbErr> {
+        Entity::find()
+            .filter(doc_info::Column::Uid.eq(uid))
+            .all(db)
+            .await
+    }
+
+    pub async fn find_doc_infos_by_params(db: &DbConn, params: Params) -> Result<Vec<doc_info::Model>, DbErr> {
+        // Setup paginator
+        let paginator = Entity::find();
+
+        // Fetch paginated posts
+        let mut query = paginator
+            .find_with_related(kb_info::Entity);
+        if let Some(kb_id) = params.filter.kb_id {
+            query = query.filter(kb_info::Column::KbId.eq(kb_id));
+        }
+        if let Some(folder_id) = params.filter.folder_id {
+
+        }
+        if let Some(tag_id) = params.filter.tag_id {
+            query = query.filter(tag_info::Column::Tid.eq(tag_id));
+        }
+        if let Some(keywords) = params.filter.keywords {
+
+        }
+        Ok(query.order_by_asc(doc_info::Column::Did)
+            .all(db)
+            .await?
+            .into_iter()
+            .map(|(mut doc_info, kb_infos)| {
+                doc_info.kb_infos = kb_infos;
+                doc_info
+            })
+            .collect())
+    }
+
+    pub async fn find_doc_infos_in_page(
+        db: &DbConn,
+        page: u64,
+        posts_per_page: u64,
+    ) -> Result<(Vec<doc_info::Model>, u64), DbErr> {
+        // Setup paginator
+        let paginator = Entity::find()
+            .order_by_asc(doc_info::Column::Did)
+            .paginate(db, posts_per_page);
+        let num_pages = paginator.num_pages().await?;
+
+        // Fetch paginated posts
+        paginator.fetch_page(page - 1).await.map(|p| (p, num_pages))
+    }
+}
+
+pub struct Mutation;
+
+impl Mutation {
+
+    pub async fn mv_doc_info(
+        db: &DbConn,
+        dest_did: i64,
+        dids: &[i64]
+    ) -> Result<(), DbErr> {
+        for did in dids {
+            let _ = doc2_doc::ActiveModel {
+                parent_id: Set(dest_did),
+                did: Set(*did),
+            }
+                .save(db)
+                .await
+                .unwrap();
+        }
+
+        Ok(())
+    }
+
+    pub async fn create_doc_info(
+        db: &DbConn,
+        form_data: doc_info::Model,
+    ) -> Result<doc_info::ActiveModel, DbErr> {
+        doc_info::ActiveModel {
+            did: Default::default(),
+            uid: Set(form_data.uid.to_owned()),
+            doc_name: Set(form_data.doc_name.to_owned()),
+            size: Set(form_data.size.to_owned()),
+            r#type: Set(form_data.r#type.to_owned()),
+            kb_progress: Set(form_data.kb_progress.to_owned()),
+            location: Set(form_data.location.to_owned()),
+            created_at: Set(Local::now().date_naive()),
+            updated_at: Set(Local::now().date_naive()),
+        }
+            .save(db)
+            .await
+    }
+
+    pub async fn update_doc_info_by_id(
+        db: &DbConn,
+        id: i64,
+        form_data: doc_info::Model,
+    ) -> Result<doc_info::Model, DbErr> {
+        let doc_info: doc_info::ActiveModel = Entity::find_by_id(id)
+            .one(db)
+            .await?
+            .ok_or(DbErr::Custom("Cannot find.".to_owned()))
+            .map(Into::into)?;
+
+        doc_info::ActiveModel {
+            did: doc_info.did,
+            uid: Set(form_data.uid.to_owned()),
+            doc_name: Set(form_data.doc_name.to_owned()),
+            size: Set(form_data.size.to_owned()),
+            r#type: Set(form_data.r#type.to_owned()),
+            kb_progress: Set(form_data.kb_progress.to_owned()),
+            location: Set(form_data.location.to_owned()),
+            created_at: Default::default(),
+            updated_at: Set(Local::now().date_naive()),
+        }
+            .update(db)
+            .await
+    }
+
+    pub async fn delete_doc_info(db: &DbConn, doc_id: i64) -> Result<DeleteResult, DbErr> {
+        let tag: doc_info::ActiveModel = Entity::find_by_id(doc_id)
+            .one(db)
+            .await?
+            .ok_or(DbErr::Custom("Cannot find.".to_owned()))
+            .map(Into::into)?;
+
+        tag.delete(db).await
+    }
+
+    pub async fn delete_all_doc_infos(db: &DbConn) -> Result<DeleteResult, DbErr> {
+        Entity::delete_many().exec(db).await
+    }
+}
\ No newline at end of file
diff --git a/src/service/kb_info.rs b/src/service/kb_info.rs
new file mode 100644
index 00000000..99933545
--- /dev/null
+++ b/src/service/kb_info.rs
@@ -0,0 +1,96 @@
+use chrono::{Local, NaiveDate};
+use sea_orm::{ActiveModelTrait, ColumnTrait, DbConn, DbErr, DeleteResult, EntityTrait, PaginatorTrait, QueryFilter, QueryOrder};
+use sea_orm::ActiveValue::Set;
+use crate::entity::kb_info;
+use crate::entity::kb_info::Entity;
+
+pub struct Query;
+
+impl Query {
+    pub async fn find_kb_info_by_id(db: &DbConn, id: i64) -> Result<Option<kb_info::Model>, DbErr> {
+        Entity::find_by_id(id).one(db).await
+    }
+
+    pub async fn find_kb_infos(db: &DbConn) -> Result<Vec<kb_info::Model>, DbErr> {
+        Entity::find().all(db).await
+    }
+
+    pub async fn find_kb_infos_by_uid(db: &DbConn, uid: i64) -> Result<Vec<kb_info::Model>, DbErr> {
+        Entity::find()
+            .filter(kb_info::Column::Uid.eq(uid))
+            .all(db)
+            .await
+    }
+
+    pub async fn find_kb_infos_in_page(
+        db: &DbConn,
+        page: u64,
+        posts_per_page: u64,
+    ) -> Result<(Vec<kb_info::Model>, u64), DbErr> {
+        // Setup paginator
+        let paginator = Entity::find()
+            .order_by_asc(kb_info::Column::KbId)
+            .paginate(db, posts_per_page);
+        let num_pages = paginator.num_pages().await?;
+
+        // Fetch paginated posts
+        paginator.fetch_page(page - 1).await.map(|p| (p, num_pages))
+    }
+}
+
+pub struct Mutation;
+
+impl Mutation {
+    pub async fn create_kb_info(
+        db: &DbConn,
+        form_data: kb_info::Model,
+    ) -> Result<kb_info::ActiveModel, DbErr> {
+        kb_info::ActiveModel {
+            kb_id: Default::default(),
+            uid: Set(form_data.uid.to_owned()),
+            kn_name: Set(form_data.kn_name.to_owned()),
+            icon: Set(form_data.icon.to_owned()),
+            created_at: Set(Local::now().date_naive()),
+            updated_at: Set(Local::now().date_naive()),
+        }
+            .save(db)
+            .await
+    }
+
+    pub async fn update_kb_info_by_id(
+        db: &DbConn,
+        id: i64,
+        form_data: kb_info::Model,
+    ) -> Result<kb_info::Model, DbErr> {
+        let kb_info: kb_info::ActiveModel = Entity::find_by_id(id)
+            .one(db)
+            .await?
+            .ok_or(DbErr::Custom("Cannot find.".to_owned()))
+            .map(Into::into)?;
+
+        kb_info::ActiveModel {
+            kb_id: kb_info.kb_id,
+            uid: kb_info.uid,
+            kn_name: Set(form_data.kn_name.to_owned()),
+            icon: Set(form_data.icon.to_owned()),
+            created_at: Default::default(),
+            updated_at: Set(Local::now().date_naive()),
+        }
+            .update(db)
+            .await
+    }
+
+    pub async fn delete_kb_info(db: &DbConn, kb_id: i64) -> Result<DeleteResult, DbErr> {
+        let tag: kb_info::ActiveModel = Entity::find_by_id(kb_id)
+            .one(db)
+            .await?
+            .ok_or(DbErr::Custom("Cannot find.".to_owned()))
+            .map(Into::into)?;
+
+        tag.delete(db).await
+    }
+
+    pub async fn delete_all_kb_infos(db: &DbConn) -> Result<DeleteResult, DbErr> {
+        Entity::delete_many().exec(db).await
+    }
+}
\ No newline at end of file
diff --git a/src/service/mod.rs b/src/service/mod.rs
index ceecbc1b..333b9f18 100644
--- a/src/service/mod.rs
+++ b/src/service/mod.rs
@@ -1,2 +1,4 @@
 pub(crate) mod dialog_info;
-pub(crate) mod tag_info;
\ No newline at end of file
+pub(crate) mod tag_info;
+pub(crate) mod kb_info;
+pub(crate) mod doc_info;
\ No newline at end of file
diff --git a/src/service/tag_info.rs b/src/service/tag_info.rs
index 656eb2c9..f7d3f5ba 100644
--- a/src/service/tag_info.rs
+++ b/src/service/tag_info.rs
@@ -22,7 +22,7 @@ impl Query {
     ) -> Result<(Vec<tag_info::Model>, u64), DbErr> {
         // Setup paginator
         let paginator = Entity::find()
-            .order_by_asc(tag_info::Column::Uid)
+            .order_by_asc(tag_info::Column::Tid)
             .paginate(db, posts_per_page);
         let num_pages = paginator.num_pages().await?;