diff --git a/scripts/dcgm_diag_bg_log.sh b/scripts/dcgm_diag_bg_log.sh
index b9fe8ce..c3d1381 100644
--- a/scripts/dcgm_diag_bg_log.sh
+++ b/scripts/dcgm_diag_bg_log.sh
@@ -25,7 +25,7 @@ fi
 
 # 执行 dcgmi 诊断命令，后台运行并将所有输出（标准输出+错误）重定向到日志文件
 echo "正在启动 dcgmi diag -r 4 后台任务，结果将保存到 $LOG_FILE..." 
-echo "#------------$(date):开始压测------------------#">>>$LOG_FILE
+echo "#------------$(date):开始压测------------------#">>$LOG_FILE
 dcgmi diag -r 4 >> "$LOG_FILE" 2>&1 &
 echo "#------------$(date):压测结束------------------#">>$LOG_FILE