diff --git a/src/utils/getMessage.js b/src/utils/getMessage.js
index 576d845..839a85c 100644
--- a/src/utils/getMessage.js
+++ b/src/utils/getMessage.js
@@ -15,7 +15,10 @@ function formatTime(timeStr) {
     // 函数逻辑不变...
     const now = new Date();
     const msgTime = new Date(timeStr);
-    const diffMs = now - msgTime;
+    let diffMs = now - msgTime;
+    if (diffMs < 0) {
+        diffMs = 0
+    }
     const diffMins = Math.floor(diffMs / (1000 * 60));
     const diffHours = Math.floor(diffMins / 60);
     const diffDays = Math.floor(diffHours / 24);