diff --git a/packages/flat-components/src/components/UsersPanel/index.tsx b/packages/flat-components/src/components/UsersPanel/index.tsx
index 19a047899c7..eb862c06746 100644
--- a/packages/flat-components/src/components/UsersPanel/index.tsx
+++ b/packages/flat-components/src/components/UsersPanel/index.tsx
@@ -102,6 +102,9 @@ export const UsersPanel = /* @__PURE__ */ observer<UsersPanelProps>(function Use
                         ))}
                     </tbody>
                 </table>
+                {users.length === 0 && (
+                    <div className="users-panel-list-empty">{t("no-students")}</div>
+                )}
             </div>
         </div>
     );
diff --git a/packages/flat-components/src/components/UsersPanel/style.less b/packages/flat-components/src/components/UsersPanel/style.less
index 0e3d2ec52bb..02b9eb9f46f 100644
--- a/packages/flat-components/src/components/UsersPanel/style.less
+++ b/packages/flat-components/src/components/UsersPanel/style.less
@@ -70,6 +70,14 @@
     }
 }
 
+.users-panel-list-empty {
+    flex: 1;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    color: var(--text-weaker);
+}
+
 .users-panel-list-item {
     font-size: 0;
     position: relative;
diff --git a/packages/flat-i18n/locales/en.json b/packages/flat-i18n/locales/en.json
index be7c6410e68..f3f0c77d2c7 100644
--- a/packages/flat-i18n/locales/en.json
+++ b/packages/flat-i18n/locales/en.json
@@ -27,6 +27,7 @@
   "raised-hand": "(Hand raised)",
   "has-left": "(Has left)",
   "offline": "offline",
+  "no-students": "No students",
   "say-something": "Say something...",
   "send": "send",
   "teacher": "Teacher",
diff --git a/packages/flat-i18n/locales/zh-CN.json b/packages/flat-i18n/locales/zh-CN.json
index 4d613938d33..58f95f01c24 100644
--- a/packages/flat-i18n/locales/zh-CN.json
+++ b/packages/flat-i18n/locales/zh-CN.json
@@ -27,6 +27,7 @@
   "raised-hand": "(已举手)",
   "has-left": "（已离开）",
   "offline": "已离线",
+  "no-students": "暂无学生",
   "agree": "通过",
   "me": "(我)",
   "cancel-hand-raising": "取消举手",
diff --git a/packages/flat-stores/src/room-store.ts b/packages/flat-stores/src/room-store.ts
index aad3ce5fea9..4dc19545a26 100644
--- a/packages/flat-stores/src/room-store.ts
+++ b/packages/flat-stores/src/room-store.ts
@@ -21,6 +21,7 @@ import {
     recordInfo,
     RoomStatus,
     RoomType,
+    usersInfo,
 } from "@netless/flat-server-api";
 import { globalStore } from "./global-store";
 import { preferencesStore } from "./preferences-store";
@@ -132,10 +133,16 @@ export class RoomStore {
 
     public async syncOrdinaryRoomInfo(roomUUID: string): Promise<void> {
         const { roomInfo, ...restInfo } = await ordinaryRoomInfo(roomUUID);
+        // always include owner avatar url in full room info
+        const { [roomInfo.ownerUUID]: owner } = await usersInfo({
+            roomUUID,
+            usersUUID: [roomInfo.ownerUUID],
+        });
         this.updateRoom(roomUUID, roomInfo.ownerUUID, {
             ...restInfo,
             ...roomInfo,
             roomUUID,
+            ownerAvatarURL: owner.avatarURL,
         });
     }