diff --git a/app/Http/Controllers/DailySignInController.php b/app/Http/Controllers/DailySignInController.php
index 32074a3..85b7a13 100644
--- a/app/Http/Controllers/DailySignInController.php
+++ b/app/Http/Controllers/DailySignInController.php
@@ -121,6 +121,10 @@ class DailySignInController extends Controller
         $presencePayload = $this->presenceService->build($freshUser);
         $this->refreshOnlinePresence($freshUser, $presencePayload);
 
+        if ($roomId !== null && $this->chatState->isUserInRoom($roomId, $freshUser->username)) {
+            $this->broadcastSignInNotice($freshUser, $refreshedSignIn, $roomId, $currentStreakDays);
+        }
+
         return response()->json([
             'status' => 'success',
             'message' => '补签成功，'.$refreshedSignIn?->sign_in_date?->format('Y-m-d').' 已补签，当前连续签到 '.$currentStreakDays.' 天。',
@@ -145,14 +149,14 @@ class DailySignInController extends Controller
     /**
      * 方法功能：向当前聊天室广播签到成功通知。
      */
-    private function broadcastSignInNotice(User $user, DailySignIn $dailySignIn, int $roomId): void
+    private function broadcastSignInNotice(User $user, DailySignIn $dailySignIn, int $roomId, ?int $currentStreakDays = null): void
     {
         $message = [
             'id' => $this->chatState->nextMessageId($roomId),
             'room_id' => $roomId,
             'from_user' => '签到播报',
             'to_user' => '大家',
-            'content' => $this->buildNoticeContent($user, $dailySignIn),
+            'content' => $this->buildNoticeContent($user, $dailySignIn, $currentStreakDays),
             'is_secret' => false,
             'font_color' => '#0f766e',
             'action' => '',
@@ -166,13 +170,21 @@ class DailySignInController extends Controller
     /**
      * 方法功能：生成聊天室内的签到播报内容。
      */
-    private function buildNoticeContent(User $user, DailySignIn $dailySignIn): string
+    private function buildNoticeContent(User $user, DailySignIn $dailySignIn, ?int $currentStreakDays = null): string
     {
         $rewardText = $this->buildRewardText($dailySignIn);
         $identityText = $dailySignIn->identity_badge_name
             ? '，获得身份 '.e($dailySignIn->identity_badge_name)
             : '';
 
+        if ($dailySignIn->is_makeup) {
+            $signInDate = $dailySignIn->sign_in_date?->format('Y-m-d') ?? '漏签日期';
+            $streakDays = $currentStreakDays ?? (int) $dailySignIn->streak_days;
+
+            return '【'.e($user->username).'】使用补签卡补签 '.$signInDate
+                .'，当前连续签到 '.$streakDays.' 天，获得 '.$rewardText.$identityText.'。';
+        }
+
         $quickButton = '<button type="button" onclick="window.quickDailySignIn && window.quickDailySignIn()" '
             .'style="display:inline-block;margin-left:6px;padding:1px 8px;border:none;border-radius:999px;'
             .'background:#ccfbf1;color:#0f766e;font-size:10px;font-weight:bold;cursor:pointer;vertical-align:middle;">'
diff --git a/tests/Feature/DailySignInControllerTest.php b/tests/Feature/DailySignInControllerTest.php
index 33b4c73..7a3a980 100644
--- a/tests/Feature/DailySignInControllerTest.php
+++ b/tests/Feature/DailySignInControllerTest.php
@@ -303,7 +303,10 @@ class DailySignInControllerTest extends TestCase
      */
     public function test_user_can_makeup_missed_day_with_sign_repair_card(): void
     {
+        Event::fake([MessageSent::class, UserStatusUpdated::class]);
+
         $user = User::factory()->create(['jjb' => 0]);
+        $room = Room::create(['room_name' => '补签通知房', 'door_open' => true]);
         SignInRewardRule::query()->updateOrCreate(['streak_days' => 1], [
             'streak_days' => 1,
             'gold_reward' => 10,
@@ -333,9 +336,12 @@ class DailySignInControllerTest extends TestCase
             'sign_in_date' => '2026-04-24',
             'streak_days' => 1,
         ]);
+        Redis::hset("room:{$room->id}:users", $user->username, json_encode(['username' => $user->username], JSON_UNESCAPED_UNICODE));
+        Redis::setex("room:{$room->id}:alive:{$user->username}", 90, 1);
 
         $response = $this->actingAs($user)->postJson(route('daily-sign-in.makeup'), [
             'target_date' => '2026-04-23',
+            'room_id' => $room->id,
         ]);
 
         $response->assertOk()
@@ -368,6 +374,17 @@ class DailySignInControllerTest extends TestCase
             'source' => CurrencySource::SIGN_IN->value,
             'remark' => '补签 2026-04-23：当前连续签到 3 天',
         ]);
+
+        $rawMessage = Redis::lindex("room:{$room->id}:messages", -1);
+        $message = json_decode((string) $rawMessage, true);
+        $this->assertSame('签到播报', $message['from_user']);
+        $this->assertStringContainsString('使用补签卡补签 2026-04-23', $message['content']);
+        $this->assertStringContainsString('当前连续签到 3 天', $message['content']);
+
+        Event::assertDispatched(MessageSent::class, function (MessageSent $event) use ($room): bool {
+            return $event->roomId === $room->id
+                && str_contains((string) ($event->message['content'] ?? ''), '使用补签卡补签 2026-04-23');
+        });
     }
 
     /**