diff --git a/scripts/postgres-backup.sh b/scripts/postgres-backup.sh
index f70a04d..3f3d7a8 100755
--- a/scripts/postgres-backup.sh
+++ b/scripts/postgres-backup.sh
@@ -5,6 +5,9 @@ CREDENTIALS="-h ${PGHOST:-postgres} -U ${PGUSER:-postgres}"
 BACKUP_DIR=${BACKUP_DIR:-/backup}
 RETENTION_DAYS=${RETENTION_DAYS:-7}
 
+# 自动创建备份目录
+mkdir -p "$BACKUP_DIR"
+
 backup() {
   local filename="backup_$(date +%Y%m%d_%H%M%S).sql.gz"
   echo "[$(date +%Y-%m-%d\ %H:%M:%S)] Starting backup: $filename"