diff --git a/doc/api/auth.zh_CN.md b/doc/api/auth.zh_CN.md
index db02ab3..fb58d4a 100644
--- a/doc/api/auth.zh_CN.md
+++ b/doc/api/auth.zh_CN.md
@@ -17,6 +17,10 @@
 * 方法: `GET` 或 `POST`
 * RESTful: `PATCH /api/auth/user` 或 `PATCH /auth/user`
 * 鉴权: 需要
+## 修改用户名字
+* 路径: `/api/auth/user/change/name`、 `/auth/user/change/name`
+* 方法: `GET` 或 `POST`
+* 鉴权: 需要
 ## 获取Token
 * 路径: `/api/auth/token/add`、 `/auth/token/add`
 * 方法: `GET` 或 `POST`
diff --git a/src/db/sqlite/db.rs b/src/db/sqlite/db.rs
index ad26bd7..04b724b 100644
--- a/src/db/sqlite/db.rs
+++ b/src/db/sqlite/db.rs
@@ -434,6 +434,10 @@ impl PixivDownloaderSqlite {
         )?)
     }
 
+    fn _update_user_name(ts: &Transaction, id: u64, name: &str) -> Result<usize, SqliteError> {
+        Ok(ts.execute("UPDATE users SET name = ? WHERE id = ?;", (name, id))?)
+    }
+
     fn _write_version<'a>(&self, ts: &Transaction<'a>) -> Result<(), SqliteError> {
         let mut stmt = ts.prepare(
             "INSERT OR REPLACE INTO version (id, v1, v2, v3, v4) VALUES ('main', ?, ?, ?, ?);",
@@ -593,4 +597,15 @@ impl PixivDownloaderDb for PixivDownloaderSqlite {
             .await?;
         Ok(self.get_user(id).await?.expect("User not found:"))
     }
+
+    #[cfg(feature = "server")]
+    async fn update_user_name(&self, id: u64, name: &str) -> Result<User, PixivDownloaderDbError> {
+        {
+            let mut db = self.db.lock().await;
+            let mut tx = db.transaction()?;
+            Self::_update_user_name(&mut tx, id, name)?;
+            tx.commit()?;
+        }
+        Ok(self.get_user(id).await?.expect("User not found:"))
+    }
 }
diff --git a/src/db/traits.rs b/src/db/traits.rs
index 2e22e33..35d20c6 100644
--- a/src/db/traits.rs
+++ b/src/db/traits.rs
@@ -111,4 +111,9 @@ pub trait PixivDownloaderDb {
         password: &[u8],
         is_admin: bool,
     ) -> Result<User, PixivDownloaderDbError>;
+    #[cfg(feature = "server")]
+    /// Update a user's name
+    /// * `id`: The user's ID
+    /// * `name`: The user's name
+    async fn update_user_name(&self, id: u64, name: &str) -> Result<User, PixivDownloaderDbError>;
 }
diff --git a/src/ext/try_err.rs b/src/ext/try_err.rs
index d126cb4..c65e876 100644
--- a/src/ext/try_err.rs
+++ b/src/ext/try_err.rs
@@ -75,3 +75,13 @@ where
         }
     }
 }
+
+#[cfg(feature = "server")]
+impl<T> TryErr3<T> for Option<T> {
+    fn try_err3<S: AsRef<str> + ?Sized>(self, code: i32, msg: &S) -> Result<T, JSONError> {
+        match self {
+            Some(v) => Ok(v),
+            None => Err(JSONError::from((code, msg.as_ref().to_string(), None))),
+        }
+    }
+}
diff --git a/src/server/auth/user.rs b/src/server/auth/user.rs
index 92b2c0b..b0b0741 100644
--- a/src/server/auth/user.rs
+++ b/src/server/auth/user.rs
@@ -11,6 +11,8 @@ use openssl::{hash::MessageDigest, pkcs5::pbkdf2_hmac};
 pub enum AuthUserAction {
     /// Add a new user.
     Add,
+    /// Change a user's name.
+    ChangeName,
     /// Update a existed user.
     Update,
 }
@@ -153,6 +155,16 @@ impl AuthUserContext {
                         None => return Err((5, gettext("No RSA key found.")).into()),
                     }
                 }
+                AuthUserAction::ChangeName => {
+                    let name = params.get("name").try_err3(18, "No name specified.")?;
+                    let user = self
+                        .ctx
+                        .db
+                        .update_user_name(user.expect("User not found.").id, name)
+                        .await
+                        .try_err3(-1001, gettext("Failed to operate the database:"))?;
+                    Ok(user.to_json2())
+                }
                 AuthUserAction::Update => {
                     if root_user.is_some() {
                         if !user.as_ref().expect("User not found:").is_admin {
@@ -296,7 +308,7 @@ pub struct AuthUserRoute {
 impl AuthUserRoute {
     pub fn new() -> Self {
         Self {
-            regex: Regex::new(r"^(/+api)?/+auth/+user(/+(add|update))?$").unwrap(),
+            regex: Regex::new(r"^(/+api)?/+auth/+user(/+(add|update|change/+name))?$").unwrap(),
         }
     }
 }
@@ -326,7 +338,18 @@ impl MatchRoute<Body, Body> for AuthUserRoute {
                         match m {
                             "add" => Some(AuthUserAction::Add),
                             "update" => Some(AuthUserAction::Update),
-                            _ => return None,
+                            _ => {
+                                if m.starts_with("change/") {
+                                    let m = m.trim_start_matches("change/");
+                                    let m = m.trim_start_matches("/");
+                                    match m {
+                                        "name" => Some(AuthUserAction::ChangeName),
+                                        _ => return None,
+                                    }
+                                } else {
+                                    return None;
+                                }
+                            }
                         }
                     }
                     None => {
diff --git a/src/server/unittest/auth.rs b/src/server/unittest/auth.rs
index 39f64fc..d532e7b 100644
--- a/src/server/unittest/auth.rs
+++ b/src/server/unittest/auth.rs
@@ -258,5 +258,26 @@ pub async fn test(ctx: &UnitTestContext) -> Result<[(u64, Vec<u8>); 2], PixivDow
         .unwrap();
     let result = JSONResult::from_json(re)?.unwrap_err();
     assert_eq!(result.code, 17);
+    let re = ctx
+        .request_json2_sign(
+            "/auth/user/change/name",
+            &json::object! {
+                "name": "sdlkasdjklasjd"
+            },
+            &token2,
+            token2_id,
+        )
+        .await?
+        .unwrap();
+    let result = JSONResult::from_json(re)?.unwrap();
+    assert_eq!(
+        result,
+        json::object! {
+            "id": 1,
+            "name": "sdlkasdjklasjd",
+            "username": "test1",
+            "is_admin": false,
+        }
+    );
     Ok([(token_id, token), (token2_id, token2)])
 }