diff --git a/scripts/deploy-prod.sh b/scripts/deploy-prod.sh
index 1faf991..ab1e3a1 100755
--- a/scripts/deploy-prod.sh
+++ b/scripts/deploy-prod.sh
@@ -145,7 +145,7 @@ validate_env() {
     log_error "STORAGE_ENDPOINT 仍指向本机，请改为 http://minio:9000"
     exit 1
   fi
-  if grep -Eq '=(change-|保持你的|你的)' "${BACKEND_ENV}"; then
+  if awk -F= '/^[A-Z0-9_]+=/{ if ($0 ~ /=(change-|保持你的|你的)/) found=1 } END { exit found ? 0 : 1 }' "${BACKEND_ENV}"; then
     log_error "backend/.env 里还有占位值，请先替换后再部署"
     exit 1
   fi
@@ -179,9 +179,7 @@ wait_service_healthy() {
 }
 
 mysql_exec() {
-  local password
-  password="$(require_env MYSQL_PASSWORD)"
-  compose exec -T -e MYSQL_PWD="${password}" mysql mysql -u"$(require_env MYSQL_USER)" "$@"
+  compose exec -T mysql sh -c 'MYSQL_PWD="$MYSQL_PASSWORD" mysql -u"$MYSQL_USER" "$@"' sh "$@"
 }
 
 mysql_scalar() {