diff --git a/backup-db.sh b/backup-db.sh
index f65d3d1..1e01792 100755
--- a/backup-db.sh
+++ b/backup-db.sh
@@ -11,11 +11,19 @@ log() { echo "[$(date '+%H:%M:%S')] $1"; }
 
 log "开始备份云端数据库..."
 
+# 备份前执行 WAL checkpoint，确保数据全部合并到 .db 主文件
+log "执行 WAL checkpoint..."
+ssh txjp "docker exec assets-ai sqlite3 /app/data/assets.db 'PRAGMA wal_checkpoint(TRUNCATE)' && \
+          docker exec issue-ai sqlite3 /app/data/issue.db 'PRAGMA wal_checkpoint(TRUNCATE)'"
+
 # 云端打包
 ssh txjp "mkdir -p /tmp/db-backup && \
   cp /root/docker/assets-ai/data/assets.db /tmp/db-backup/assets-${TIMESTAMP}.db && \
   cp /root/docker/issue-ai/data/issue.db /tmp/db-backup/issue-${TIMESTAMP}.db"
 
+# 确保本地备份目录存在
+mkdir -p "${LOCAL_DIR}"
+
 # 复制到本地
 log "复制到本地..."
 scp "txjp:/tmp/db-backup/assets-${TIMESTAMP}.db" "${LOCAL_DIR}/"