diff --git a/edc-web/app/templates/device_logs.html b/edc-web/app/templates/device_logs.html
index df0c2dc..c651cf2 100644
--- a/edc-web/app/templates/device_logs.html
+++ b/edc-web/app/templates/device_logs.html
@@ -92,7 +92,10 @@ function eventLabel(t) {
 
 function fmtTime(v) {
     if (!v) return '-';
-    const d = new Date(v);
+    // Flask jsonify 给 MySQL DATETIME 加 "GMT" 后缀，但实际值是服务器本地时间（UTC+8）
+    // 去掉 "GMT" 让 JS 按本地时间解析，避免时区偏移 8 小时
+    const cleaned = String(v).replace(/ GMT$/, '');
+    const d = new Date(cleaned);
     if (isNaN(d.getTime())) return String(v).substring(0, 19);
     const y = d.getFullYear();
     const m = String(d.getMonth() + 1).padStart(2, '0');