diff --git a/src/renderer/src/aiCore/clients/openai/OpenAIResponseAPIClient.ts b/src/renderer/src/aiCore/clients/openai/OpenAIResponseAPIClient.ts
index 5871a04cab..1f9af6ca77 100644
--- a/src/renderer/src/aiCore/clients/openai/OpenAIResponseAPIClient.ts
+++ b/src/renderer/src/aiCore/clients/openai/OpenAIResponseAPIClient.ts
@@ -425,6 +425,7 @@ export class OpenAIResponseAPIClient extends OpenAIBaseClient<
     const toolCalls: OpenAIResponseSdkToolCall[] = []
     const outputItems: OpenAI.Responses.ResponseOutputItem[] = []
     let hasBeenCollectedToolCalls = false
+    let hasReasoningSummary = false
     return () => ({
       async transform(chunk: OpenAIResponseSdkRawChunk, controller: TransformStreamDefaultController<GenericChunk>) {
         // 处理chunk
@@ -496,6 +497,16 @@ export class OpenAIResponseAPIClient extends OpenAIBaseClient<
                 outputItems.push(chunk.item)
               }
               break
+            case 'response.reasoning_summary_part.added':
+              if (hasReasoningSummary) {
+                const separator = '\n\n'
+                controller.enqueue({
+                  type: ChunkType.THINKING_DELTA,
+                  text: separator
+                })
+              }
+              hasReasoningSummary = true
+              break
             case 'response.reasoning_summary_text.delta':
               controller.enqueue({
                 type: ChunkType.THINKING_DELTA,