diff --git a/pkg/provider/modelmgr/apis/anthropicmsgs.py b/pkg/provider/modelmgr/apis/anthropicmsgs.py
index 71423e0a..42bd3856 100644
--- a/pkg/provider/modelmgr/apis/anthropicmsgs.py
+++ b/pkg/provider/modelmgr/apis/anthropicmsgs.py
@@ -37,7 +37,7 @@ class AnthropicMessages(api.LLMAPIRequester):
         args["model"] = query.use_model.name if query.use_model.model_name is None else query.use_model.model_name
 
         req_messages = [  # req_messages 仅用于类内，外部同步由 query.messages 进行
-            m.dict(exclude_none=True) for m in query.prompt.messages
+            m.dict(exclude_none=True) for m in query.prompt.messages if m.content.strip() != ""
         ] + [m.dict(exclude_none=True) for m in query.messages]
 
         # 删除所有 role=system & content='' 的消息
diff --git a/pkg/provider/modelmgr/apis/chatcmpl.py b/pkg/provider/modelmgr/apis/chatcmpl.py
index f637f16f..afdeb19d 100644
--- a/pkg/provider/modelmgr/apis/chatcmpl.py
+++ b/pkg/provider/modelmgr/apis/chatcmpl.py
@@ -93,7 +93,7 @@ class OpenAIChatCompletions(api.LLMAPIRequester):
         pending_tool_calls = []
 
         req_messages = [  # req_messages 仅用于类内，外部同步由 query.messages 进行
-            m.dict(exclude_none=True) for m in query.prompt.messages
+            m.dict(exclude_none=True) for m in query.prompt.messages if m.content.strip() != ""
         ] + [m.dict(exclude_none=True) for m in query.messages]
 
         # req_messages.append({"role": "user", "content": str(query.message_chain)})