diff --git a/metagpt/provider/bedrock/amazon_bedrock_api.py b/metagpt/provider/bedrock/amazon_bedrock_api.py
index b6d12b8d9..7d615ec5e 100644
--- a/metagpt/provider/bedrock/amazon_bedrock_api.py
+++ b/metagpt/provider/bedrock/amazon_bedrock_api.py
@@ -16,7 +16,7 @@ class AmazonBedrockLLM(BaseLLM):
     def __init__(self, config: LLMConfig):
         self.config = config
         self.__client = self.__init_client("bedrock-runtime")
-        self.provider = get_provider(self.config.model)
+        self.__provider = get_provider(self.config.model)
 
     def __init_client(self, service_name: Literal["bedrock-runtime", "bedrock"]):
         # access key from https://us-east-1.console.aws.amazon.com/iam
@@ -33,8 +33,8 @@ class AmazonBedrockLLM(BaseLLM):
         client = self.__init_client("bedrock")
         # only output text-generation models
         response = client.list_foundation_models(byOutputModality='TEXT')
-        summaries = [f'{summary.get("modelId", ""):50} Support Streaming:{summary.get("responseStreamingSupported","")}'
-                     for summary in response.get("modelSummaries", {})]
+        summaries = [f'{summary["modelId"]:50} Support Streaming:{summary["responseStreamingSupported"]}'
+                     for summary in response["modelSummaries"]]
         logger.info("\n"+"\n".join(summaries))
 
     @property
@@ -45,12 +45,12 @@ class AmazonBedrockLLM(BaseLLM):
         }
 
     def completion(self, messages: list[dict]):
-        request_body = self.provider.get_request_body(
+        request_body = self.__provider.get_request_body(
             messages, **self._generate_kwargs)
         response = self.__client.invoke_model(
             modelId=self.config.model, body=request_body
         )
-        completions = self.provider.get_choice_text(response)
+        completions = self.__provider.get_choice_text(response)
         return completions
 
     def _chat_completion_stream(self, messages: list[dict], timeout=USE_CONFIG_TIMEOUT):
@@ -59,7 +59,7 @@ class AmazonBedrockLLM(BaseLLM):
                 f"model {self.config.model} doesn't support streaming output!")
             return self.completion(messages)
 
-        request_body = self.provider.get_request_body(
+        request_body = self.__provider.get_request_body(
             messages, **self._generate_kwargs)
         response = self.__client.invoke_model_with_response_stream(
             modelId=self.config.model, body=request_body
@@ -67,7 +67,7 @@ class AmazonBedrockLLM(BaseLLM):
 
         collected_content = []
         for event in response["body"]:
-            chunk_text = self.provider.get_choice_text_from_stream(event)
+            chunk_text = self.__provider.get_choice_text_from_stream(event)
             collected_content.append(chunk_text)
             log_llm_stream(chunk_text)