diff --git a/public/fall_down.mp3 b/public/fall_down.mp3
new file mode 100644
index 0000000..aae8e13
Binary files /dev/null and b/public/fall_down.mp3 differ
diff --git a/src/utils/socket.ts b/src/utils/socket.ts
index 6884323..5aa4180 100644
--- a/src/utils/socket.ts
+++ b/src/utils/socket.ts
@@ -24,9 +24,10 @@ const audioMgr = createAudioManager({
     b: 'oneClick.mp3',
     c: 'oxygen.mp3',
     d: '13203.wav',
+    e: 'fall_down.mp3',
 });
 
-type AudioType = 'a' | 'b' | 'c' | 'd';
+type AudioType = 'a' | 'b' | 'c' | 'd' | 'e';
 
 interface PlayerState {
     audio: HTMLAudioElement;
@@ -194,6 +195,9 @@ export function useSocket(p = basicPath, hasTimestamp: boolean = true) {
             case 'spo2':
                 audioMgr.play('c', 1);
                 break;
+            case 'fall_down':
+                audioMgr.play('e', 1);
+                break;
             default:
                 audioMgr.play('d', 1);
                 break;
@@ -211,6 +215,9 @@ export function useSocket(p = basicPath, hasTimestamp: boolean = true) {
             case 'spo2':
                 audioMgr.stop('c');
                 break;
+            case 'fall_down':
+                audioMgr.stop('e');
+                break;
             default:
                 audioMgr.stop('d');
                 break;