diff --git a/python/dify_plugin/interfaces/model/large_language_model.py b/python/dify_plugin/interfaces/model/large_language_model.py
index e239b37a..21b47171 100644
--- a/python/dify_plugin/interfaces/model/large_language_model.py
+++ b/python/dify_plugin/interfaces/model/large_language_model.py
@@ -526,8 +526,8 @@ def _code_block_mode_stream_processor_with_backtick(
 
     def _wrap_thinking_by_reasoning_content(self, delta: dict, is_reasoning: bool) -> tuple[str, bool]:
         """
-        If the reasoning response is from delta.get("reasoning_content"), we wrap
-        it with HTML think tag.
+        If the reasoning response is from delta.get("reasoning_content") or delta.get("reasoning"),
+        we wrap it with HTML think tag.
 
         :param delta: delta dictionary from LLM streaming response
         :param is_reasoning: is reasoning
@@ -535,7 +535,8 @@ def _wrap_thinking_by_reasoning_content(self, delta: dict, is_reasoning: bool) -
         """
 
         content = delta.get("content") or ""
-        reasoning_content = delta.get("reasoning_content")
+        reasoning_content = delta.get("reasoning_content") or delta.get("reasoning")
+
         output = content
         if reasoning_content:
             if not is_reasoning:
diff --git a/python/tests/interfaces/model/test_llm_ollama_adapter.py b/python/tests/interfaces/model/test_llm_ollama_adapter.py
new file mode 100644
index 00000000..d85c7147
--- /dev/null
+++ b/python/tests/interfaces/model/test_llm_ollama_adapter.py
@@ -0,0 +1,148 @@
+import unittest
+
+from dify_plugin.entities.model import AIModelEntity, ModelPropertyKey, ModelType
+from dify_plugin.entities.model.llm import LLMMode, LLMResult
+from dify_plugin.interfaces.model.large_language_model import LargeLanguageModel
+
+
+class MockLLM(LargeLanguageModel):
+    """
+    Concrete Mock class for testing non-abstract methods of LargeLanguageModel.
+    """
+
+    def _invoke(
+        self,
+        model: str,
+        credentials: dict,
+        prompt_messages: list,
+        model_parameters: dict,
+        tools: list,
+        stop: list,
+        stream: bool,
+        user: str,
+    ) -> LLMResult:
+        pass
+
+    def get_num_tokens(self, model: str, credentials: dict, prompt_messages: list, tools: list) -> int:
+        return 0
+
+    def validate_credentials(self, model: str, credentials: dict) -> None:
+        pass
+
+    @property
+    def _invoke_error_mapping(self) -> dict:
+        return {}
+
+
+class TestOllamaAdapter(unittest.TestCase):
+    def setUp(self):
+        # Create a dummy model schema to satisfy AIModel.__init__
+        dummy_schema = AIModelEntity(
+            model="mock_model",
+            label={"en_US": "Mock Model"},
+            model_type=ModelType.LLM,
+            features=[],
+            model_properties={ModelPropertyKey.MODE: LLMMode.CHAT.value, ModelPropertyKey.CONTEXT_SIZE: 4096},
+            parameter_rules=[],
+            pricing=None,
+            deprecated=False,
+        )
+        self.llm = MockLLM(model_schemas=[dummy_schema])
+
+
+    def test_with_reasoning_content(self):
+        """
+        The test includes reasoning_content,
+        and the output should contain the <think> tag.
+        """
+
+        # Simulate simulated streaming data:
+        # 1. Has reasoning_content
+
+        chunks = [
+            # Chunk 1: Thinking started
+            {"reasoning_content": "Thinking started.", "content": ""},
+            # Chunk 2: Still thinking
+            {"reasoning_content": " Still thinking.", "content": ""},
+            {"content": "Content started."},
+        ]
+
+        # Assume we are testing the logic function itself:
+        is_reasoning = False
+        full_output = ""
+
+        for chunk in chunks:
+            # Directly call the implementation in SDK to verify real code logic
+            output, is_reasoning = self.llm._wrap_thinking_by_reasoning_content(chunk, is_reasoning)
+            full_output += output
+
+        # Verify results
+        print(f"DEBUG Output: {full_output!r}")
+
+        assert "<think>" in full_output
+        assert "Thinking started. Still thinking." in full_output
+
+
+    def test_with_reasoning(self):
+        """
+        The test includes reasoning,
+        and the output should contain the <think> tag.
+        """
+
+        # Simulate simulated streaming data:
+        # 1. Has reasoning
+
+        chunks = [
+            # Chunk 1: Thinking started
+            {"reasoning": "Thinking started.", "content": ""},
+            # Chunk 2: Still thinking
+            {"reasoning": " Still thinking.", "content": ""},
+            {"content": "Content started."},
+        ]
+
+        # Assume we are testing the logic function itself:
+        is_reasoning = False
+        full_output = ""
+
+        for chunk in chunks:
+            # Directly call the implementation in SDK to verify real code logic
+            output, is_reasoning = self.llm._wrap_thinking_by_reasoning_content(chunk, is_reasoning)
+            full_output += output
+
+        # Verify results
+        print(f"DEBUG Output: {full_output!r}")
+
+        assert "<think>" in full_output
+        assert "Thinking started. Still thinking." in full_output
+
+
+    def test_without_reasoning(self):
+        """
+        The test does not include reasoning_content or reasoning.
+        The output should not contain the <think> tag.
+        """
+
+        # Simulate simulated streaming data:
+        # 1. Has no reasoning_content and reasoning
+
+        chunks = [
+            # Chunk 1: No Thinking
+            {"content": "Content started."},
+            # Chunk 2: Still No thinking
+            {"content": " Still content."},
+        ]
+
+        # Assume we are testing the logic function itself:
+        is_reasoning = False
+        full_output = ""
+
+        for chunk in chunks:
+            # Directly call the implementation in SDK to verify real code logic
+            output, is_reasoning = self.llm._wrap_thinking_by_reasoning_content(chunk, is_reasoning)
+            full_output += output
+
+        # Verify results
+        print(f"DEBUG Output: {full_output!r}")
+
+        assert "<think>" not in full_output
+        assert "Content started. Still content." in full_output