diff --git a/fastdeploy/engine/request.py b/fastdeploy/engine/request.py
index 1b846d8fc..3036f530f 100644
--- a/fastdeploy/engine/request.py
+++ b/fastdeploy/engine/request.py
@@ -197,7 +197,7 @@ class Request:
             guided_grammar=d.get("guided_grammar", None),
             structural_tag=d.get("structural_tag", None),
             guided_json_object=d.get("guided_json_object", None),
-            enable_thinking=d.get("enable_thinking", False),
+            enable_thinking=d.get("enable_thinking", None),
             reasoning_max_tokens=d.get("reasoning_max_tokens", None),
             trace_carrier=d.get("trace_carrier", {}),
             chat_template=d.get("chat_template", None),
diff --git a/fastdeploy/input/ernie4_5_processor.py b/fastdeploy/input/ernie4_5_processor.py
index e0daacdc6..a151dbfdd 100644
--- a/fastdeploy/input/ernie4_5_processor.py
+++ b/fastdeploy/input/ernie4_5_processor.py
@@ -130,7 +130,7 @@ class Ernie4_5Processor(BaseDataProcessor):
                 if chat_template_kwargs:
                     if isinstance(chat_template_kwargs, dict):
                         for k, v in chat_template_kwargs.items():
-                            if k not in task:
+                            if k not in task or task[k] is None:
                                 task[k] = v
                     else:
                         raise ValueError("Invalid input: chat_template_kwargs must be a dict")
diff --git a/fastdeploy/input/text_processor.py b/fastdeploy/input/text_processor.py
index 75e068c40..45ce5dda2 100644
--- a/fastdeploy/input/text_processor.py
+++ b/fastdeploy/input/text_processor.py
@@ -245,7 +245,7 @@ class DataProcessor(BaseDataProcessor):
                 if chat_template_kwargs:
                     if isinstance(chat_template_kwargs, dict):
                         for k, v in chat_template_kwargs.items():
-                            if k not in task:
+                            if k not in task or task[k] is None:
                                 task[k] = v
                     else:
                         raise ValueError("Invalid input: chat_template_kwargs must be a dict")