diff --git a/deepdoc/parser/mineru_parser.py b/deepdoc/parser/mineru_parser.py
index 7e3919bbd..57840ebb8 100644
--- a/deepdoc/parser/mineru_parser.py
+++ b/deepdoc/parser/mineru_parser.py
@@ -106,7 +106,7 @@ class MinerUParser(RAGFlowPdfParser):
     def check_installation(self, backend: str = "pipeline", server_url: Optional[str] = None) -> tuple[bool, str]:
         reason = ""
 
-        valid_backends = ["pipeline", "vlm-http-client", "vlm-transformers", "vlm-vllm-engine"]
+        valid_backends = ["pipeline", "vlm-http-client", "vlm-transformers", "vlm-vllm-engine", "vlm-mlx-engine"]
         if backend not in valid_backends:
             reason = "[MinerU] Invalid backend '{backend}'. Valid backends are: {valid_backends}"
             self.logger.warning(reason)