diff --git a/client/api/ApiDeclare.ts b/client/api/ApiDeclare.ts
index 0e739d0..d503082 100644
--- a/client/api/ApiDeclare.ts
+++ b/client/api/ApiDeclare.ts
@@ -7,6 +7,8 @@ export type CallMethod =
     "User.updateProfile" |
     "User.getMyInfo" |
 
+    "User.getInfo" |
+
     "User.getMyContacts" |
     "User.addContact" |
     "User.removeContacts" |
diff --git a/client/api/DataCaches.ts b/client/api/DataCaches.ts
new file mode 100644
index 0000000..f422a1a
--- /dev/null
+++ b/client/api/DataCaches.ts
@@ -0,0 +1,19 @@
+import data from "../Data.ts"
+import Client from "./Client.ts"
+import User from "./client_data/User.ts"
+
+export default class DataCaches {
+    static userProfiles: { [key: string]: User} = {}
+    static async getUserProfile(userId: string): Promise<User> {
+        if (this.userProfiles[userId]) return this.userProfiles[userId]
+        const re = await Client.invoke("User.getInfo", {
+            token: data.access_token,
+            target: userId
+        })
+        if (re.code != 200) return {
+            id: '',
+            nickname: "",
+        }
+        return this.userProfiles[userId] = (re.data as unknown as User)
+    }
+}
\ No newline at end of file
diff --git a/server/api/ApiDeclare.ts b/server/api/ApiDeclare.ts
index 0e739d0..d503082 100644
--- a/server/api/ApiDeclare.ts
+++ b/server/api/ApiDeclare.ts
@@ -7,6 +7,8 @@ export type CallMethod =
     "User.updateProfile" |
     "User.getMyInfo" |
 
+    "User.getInfo" |
+
     "User.getMyContacts" |
     "User.addContact" |
     "User.removeContacts" |
diff --git a/server/api/UserApi.ts b/server/api/UserApi.ts
index 0a81020..b8f3c0b 100644
--- a/server/api/UserApi.ts
+++ b/server/api/UserApi.ts
@@ -34,7 +34,7 @@ export default class UserApi extends BaseApi {
                     msg: "驗證失敗",
                     code: 401,
                 }
-                
+
                 clientInfo.userId = access_token.author
                 console.log(chalk.green('[驗]') + ` ${access_token.author} authed on Client ${deviceId} (ip = ${ip})`)
                 if (ApiManager.clients[clientInfo.userId] == null) ApiManager.clients[clientInfo.userId] = {
@@ -250,6 +250,35 @@ export default class UserApi extends BaseApi {
          *                    公開資料
          * ================================================
          */
+        // 獲取用戶信息
+        this.registerEvent("User.getInfo", (args, { deviceId }) => {
+            if (this.checkArgsMissing(args, ['token', 'target'])) return {
+                msg: "參數缺失",
+                code: 400,
+            }
 
+            const token = TokenManager.decode(args.token as string)
+            if (!this.checkToken(token, deviceId)) return {
+                code: 401,
+                msg: "令牌無效",
+            }
+
+            const user = User.findById(args.target as string)
+            if (user == null) return {
+                code: 404,
+                msg: "用戶不存在",
+            }
+
+            return {
+                msg: "成功",
+                code: 200,
+                data: {
+                    username: user!.getUserName(),
+                    nickname: user!.getNickName(),
+                    avatar: user!.getAvatarFileHash() ? "uploaded_files/" + user!.getAvatarFileHash() : null,
+                    id: token.author,
+                }
+            }
+        })
     }
 }
\ No newline at end of file