diff --git a/relay/channel/volcengine/adaptor.go b/relay/channel/volcengine/adaptor.go
index b46cb9525..0af019da4 100644
--- a/relay/channel/volcengine/adaptor.go
+++ b/relay/channel/volcengine/adaptor.go
@@ -2,6 +2,7 @@ package volcengine
 
 import (
 	"bytes"
+	"encoding/json"
 	"errors"
 	"fmt"
 	"io"
@@ -214,6 +215,12 @@ func (a *Adaptor) ConvertOpenAIRequest(c *gin.Context, info *relaycommon.RelayIn
 	if request == nil {
 		return nil, errors.New("request is nil")
 	}
+	// 适配 方舟deepseek混合模型 的 thinking 后缀
+	if strings.HasSuffix(info.UpstreamModelName, "-thinking") && strings.HasPrefix(info.UpstreamModelName, "deepseek") {
+		info.UpstreamModelName = strings.TrimSuffix(info.UpstreamModelName, "-thinking")
+		request.Model = info.UpstreamModelName
+		request.THINKING = json.RawMessage(`{"type": "enabled"}`)
+	}
 	return request, nil
 }
 
diff --git a/service/convert.go b/service/convert.go
index ea219c4fa..b232ca396 100644
--- a/service/convert.go
+++ b/service/convert.go
@@ -248,9 +248,10 @@ func StreamResponseOpenAI2Claude(openAIResponse *dto.ChatCompletionsStreamRespon
 				},
 			})
 			claudeResponses = append(claudeResponses, &dto.ClaudeResponse{
-				Type: "content_block_delta",
+				Index: &info.ClaudeConvertInfo.Index,
+				Type:  "content_block_delta",
 				Delta: &dto.ClaudeMediaMessage{
-					Type: "text",
+					Type: "text_delta",
 					Text: common.GetPointer[string](openAIResponse.Choices[0].Delta.GetContentString()),
 				},
 			})