diff --git a/backup-db.sh b/backup-db.sh
index 025d887..9786943 100755
--- a/backup-db.sh
+++ b/backup-db.sh
@@ -19,11 +19,11 @@ ssh txjp "docker exec issue-ai node -e \"const D=require('better-sqlite3');const
 log "执行 WAL checkpoint (LLDAP)..."
 ssh txjp "docker exec lldap sqlite3 /data/users.db 'PRAGMA wal_checkpoint(TRUNCATE);' 2>/dev/null || true"
 
-# 云端打包
+# 云端打包（使用 docker cp 从容器内复制，确保拿到真实数据而非旧宿主机文件）
 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 && \
-  docker cp lldap:/data/users.db /tmp/db-backup/ldap-${TIMESTAMP}.db 2>/dev/null || cp /root/docker/ldap-ai/data/lldap/users.db /tmp/db-backup/ldap-${TIMESTAMP}.db"
+  docker cp assets-ai:/app/data/assets.db /tmp/db-backup/assets-${TIMESTAMP}.db && \
+  docker cp issue-ai:/app/data/issue.db /tmp/db-backup/issue-${TIMESTAMP}.db && \
+  docker cp lldap:/data/users.db /tmp/db-backup/ldap-${TIMESTAMP}.db"
 
 # 确保本地备份目录存在
 mkdir -p "${LOCAL_DIR}"