diff --git a/fastdeploy/rl/dynamic_weight_manager.py b/fastdeploy/rl/dynamic_weight_manager.py
index bee87de3b..cbee0f990 100644
--- a/fastdeploy/rl/dynamic_weight_manager.py
+++ b/fastdeploy/rl/dynamic_weight_manager.py
@@ -281,10 +281,14 @@ class DynamicWeightManager:
                 logger.info("infer engine stopped! start to load new checkpoint...")
                 model_runner.clear_requests()
                 model_runner.update_parameters(pid)
+                while model_weights_status.value[0] != ModelWeightsStatus.NORMAL:
+                    time.sleep(0.01)
                 logger.info("finished loading new checkpoint")
             elif model_weights_status.value[0] == ModelWeightsStatus.CLEARING:
                 logger.info("infer engine stopped! start to clear checkpoint...")
                 model_runner.clear_requests()
                 model_runner.clear_parameters(pid)
+                while model_weights_status.value[0] != ModelWeightsStatus.CLEARED:
+                    time.sleep(0.01)
                 logger.info("finished clearing checkpoint")
             time.sleep(0.01)