diff --git a/backUpIncremental.sh b/backUpIncremental.sh
index eb92c2c..e207429 100755
--- a/backUpIncremental.sh
+++ b/backUpIncremental.sh
@@ -43,14 +43,11 @@ cd $backUpPath
 # 更新上次备份的binlog文件名和位置
 echo "$CURRENT_BINLOG $CURRENT_POSITION" > "last_backup.txt"
 
-backup_files=()
-
-cd $backUpPath
-find ${dbName}-incremental-*.sql.zip -type f -print0 | while IFS= read -r -d '' file; do
-    file_date=$(stat -c %Y "$file")
-    current_time=$(date +%s)
-    if (( (current_time - file_date) > 86400 )); then
-        backup_files+=("$file")
+OLD_BACKUPS=()
+for file in ${backUpPath}/${dbName}-incremental--*.sql.zip; do
+    file_date=$(echo "$file" | grep -oP "(?<=-$dbName-)\d{10}(?=.sql.zip)")
+    if [[ $((CURRENT_DATE - file_date)) -gt 600 ]]; then
+        OLD_BACKUPS+=("$file")
     fi
 done