diff --git a/src/libs/agent-runtime/utils/streams/openai.test.ts b/src/libs/agent-runtime/utils/streams/openai.test.ts
index 3a26ba3c3829a..fc056db56c64e 100644
--- a/src/libs/agent-runtime/utils/streams/openai.test.ts
+++ b/src/libs/agent-runtime/utils/streams/openai.test.ts
@@ -754,6 +754,7 @@ describe('OpenAIStream', () => {
         ].map((i) => `${i}\n`),
       );
     });
+
     it('should handle reasoning in litellm', async () => {
       const data = [
         {
@@ -954,5 +955,206 @@ describe('OpenAIStream', () => {
         ].map((i) => `${i}\n`),
       );
     });
+
+    it('should handle reasoning in siliconflow', async () => {
+      const data = [
+        {
+          id: '1',
+          object: 'chat.completion.chunk',
+          created: 1737563070,
+          model: 'deepseek-reasoner',
+          system_fingerprint: 'fp_1c5d8833bc',
+          choices: [
+            {
+              index: 0,
+              delta: { role: 'assistant', reasoning_content: '', content: '' },
+              logprobs: null,
+              finish_reason: null,
+            },
+          ],
+        },
+        {
+          id: '1',
+          object: 'chat.completion.chunk',
+          created: 1737563070,
+          model: 'deepseek-reasoner',
+          system_fingerprint: 'fp_1c5d8833bc',
+          choices: [
+            {
+              index: 0,
+              delta: { reasoning_content: '您好', content: '' },
+              logprobs: null,
+              finish_reason: null,
+            },
+          ],
+        },
+        {
+          id: '1',
+          object: 'chat.completion.chunk',
+          created: 1737563070,
+          model: 'deepseek-reasoner',
+          system_fingerprint: 'fp_1c5d8833bc',
+          choices: [
+            {
+              index: 0,
+              delta: { reasoning_content: '！', content: '' },
+              logprobs: null,
+              finish_reason: null,
+            },
+          ],
+        },
+        {
+          id: '1',
+          object: 'chat.completion.chunk',
+          created: 1737563070,
+          model: 'deepseek-reasoner',
+          system_fingerprint: 'fp_1c5d8833bc',
+          choices: [
+            {
+              index: 0,
+              delta: { content: '你好', reasoning_content: null },
+              logprobs: null,
+              finish_reason: null,
+            },
+          ],
+        },
+        {
+          id: '1',
+          object: 'chat.completion.chunk',
+          created: 1737563070,
+          model: 'deepseek-reasoner',
+          system_fingerprint: 'fp_1c5d8833bc',
+          choices: [
+            {
+              index: 0,
+              delta: { content: '很高兴', reasoning_cont: null },
+              logprobs: null,
+              finish_reason: null,
+            },
+          ],
+        },
+        {
+          id: '1',
+          object: 'chat.completion.chunk',
+          created: 1737563070,
+          model: 'deepseek-reasoner',
+          system_fingerprint: 'fp_1c5d8833bc',
+          choices: [
+            {
+              index: 0,
+              delta: { content: '为您', reasoning_content: null },
+              logprobs: null,
+              finish_reason: null,
+            },
+          ],
+        },
+        {
+          id: '1',
+          object: 'chat.completion.chunk',
+          created: 1737563070,
+          model: 'deepseek-reasoner',
+          system_fingerprint: 'fp_1c5d8833bc',
+          choices: [
+            {
+              index: 0,
+              delta: { content: '提供', reasoning_content: null },
+              logprobs: null,
+              finish_reason: null,
+            },
+          ],
+        },
+        {
+          id: '1',
+          object: 'chat.completion.chunk',
+          created: 1737563070,
+          model: 'deepseek-reasoner',
+          system_fingerprint: 'fp_1c5d8833bc',
+          choices: [
+            {
+              index: 0,
+              delta: { content: '帮助。', reasoning_content: null },
+              logprobs: null,
+              finish_reason: null,
+            },
+          ],
+        },
+        {
+          id: '1',
+          object: 'chat.completion.chunk',
+          created: 1737563070,
+          model: 'deepseek-reasoner',
+          system_fingerprint: 'fp_1c5d8833bc',
+          choices: [
+            {
+              index: 0,
+              delta: { content: '', reasoning_content: null },
+              logprobs: null,
+              finish_reason: 'stop',
+            },
+          ],
+          usage: {
+            prompt_tokens: 6,
+            completion_tokens: 104,
+            total_tokens: 110,
+            prompt_tokens_details: { cached_tokens: 0 },
+            completion_tokens_details: { reasoning_tokens: 70 },
+            prompt_cache_hit_tokens: 0,
+            prompt_cache_miss_tokens: 6,
+          },
+        },
+      ];
+
+      const mockOpenAIStream = new ReadableStream({
+        start(controller) {
+          data.forEach((chunk) => {
+            controller.enqueue(chunk);
+          });
+
+          controller.close();
+        },
+      });
+
+      const protocolStream = OpenAIStream(mockOpenAIStream);
+
+      const decoder = new TextDecoder();
+      const chunks = [];
+
+      // @ts-ignore
+      for await (const chunk of protocolStream) {
+        chunks.push(decoder.decode(chunk, { stream: true }));
+      }
+
+      expect(chunks).toEqual(
+        [
+          'id: 1',
+          'event: reasoning',
+          `data: ""\n`,
+          'id: 1',
+          'event: reasoning',
+          `data: "您好"\n`,
+          'id: 1',
+          'event: reasoning',
+          `data: "！"\n`,
+          'id: 1',
+          'event: text',
+          `data: "你好"\n`,
+          'id: 1',
+          'event: text',
+          `data: "很高兴"\n`,
+          'id: 1',
+          'event: text',
+          `data: "为您"\n`,
+          'id: 1',
+          'event: text',
+          `data: "提供"\n`,
+          'id: 1',
+          'event: text',
+          `data: "帮助。"\n`,
+          'id: 1',
+          'event: stop',
+          `data: "stop"\n`,
+        ].map((i) => `${i}\n`),
+      );
+    });
   });
 });
diff --git a/src/libs/agent-runtime/utils/streams/openai.ts b/src/libs/agent-runtime/utils/streams/openai.ts
index 4edcd3303112e..3ec8b1f7f4543 100644
--- a/src/libs/agent-runtime/utils/streams/openai.ts
+++ b/src/libs/agent-runtime/utils/streams/openai.ts
@@ -37,9 +37,8 @@ export const transformOpenAIStream = (
     return { data: errorData, id: 'first_chunk_error', type: 'error' };
   }
 
-  // maybe need another structure to add support for multiple choices
-
   try {
+    // maybe need another structure to add support for multiple choices
     const item = chunk.choices[0];
     if (!item) {
       return { data: chunk, id: chunk.id, type: 'data' };
@@ -88,12 +87,10 @@ export const transformOpenAIStream = (
       return { data: item.finish_reason, id: chunk.id, type: 'stop' };
     }
 
-    if (typeof item.delta?.content === 'string') {
-      return { data: item.delta.content, id: chunk.id, type: 'text' };
-    }
-
-    // DeepSeek reasoner 会将 thinking 放在 reasoning_content 字段中
-    // litellm 处理 reasoning content 时 不会设定 content = null
+    // DeepSeek reasoner will put thinking in the reasoning_content field
+    // litellm will not set content = null when processing reasoning content
+    // en: siliconflow has encountered a situation where both content and reasoning_content are present, so the parsing order go ahead
+    // refs: https://github.com/lobehub/lobe-chat/issues/5681
     if (
       item.delta &&
       'reasoning_content' in item.delta &&
@@ -102,6 +99,10 @@ export const transformOpenAIStream = (
       return { data: item.delta.reasoning_content, id: chunk.id, type: 'reasoning' };
     }
 
+    if (typeof item.delta?.content === 'string') {
+      return { data: item.delta.content, id: chunk.id, type: 'text' };
+    }
+
     // 无内容情况
     if (item.delta && item.delta.content === null) {
       return { data: item.delta, id: chunk.id, type: 'data' };