diff --git a/controller/relay-ali.go b/controller/relay-ali.go
index 6a79d2b..93839d9 100644
--- a/controller/relay-ali.go
+++ b/controller/relay-ali.go
@@ -88,17 +88,17 @@ func requestOpenAI2Ali(request GeneralOpenAIRequest) *AliChatRequest {
 		message := request.Messages[i]
 		if message.Role == "system" {
 			messages = append(messages, AliMessage{
-				User: string(message.Content),
+				User: message.StringContent(),
 				Bot:  "Okay",
 			})
 			continue
 		} else {
 			if i == len(request.Messages)-1 {
-				prompt = string(message.Content)
+				prompt = message.StringContent()
 				break
 			}
 			messages = append(messages, AliMessage{
-				User: string(message.Content),
+				User: message.StringContent(),
 				Bot:  string(request.Messages[i+1].Content),
 			})
 			i++
diff --git a/controller/relay-baidu.go b/controller/relay-baidu.go
index 05bbad0..3dd9ba6 100644
--- a/controller/relay-baidu.go
+++ b/controller/relay-baidu.go
@@ -89,7 +89,7 @@ func requestOpenAI2Baidu(request GeneralOpenAIRequest) *BaiduChatRequest {
 		if message.Role == "system" {
 			messages = append(messages, BaiduMessage{
 				Role:    "user",
-				Content: string(message.Content),
+				Content: message.StringContent(),
 			})
 			messages = append(messages, BaiduMessage{
 				Role:    "assistant",
@@ -98,7 +98,7 @@ func requestOpenAI2Baidu(request GeneralOpenAIRequest) *BaiduChatRequest {
 		} else {
 			messages = append(messages, BaiduMessage{
 				Role:    message.Role,
-				Content: string(message.Content),
+				Content: message.StringContent(),
 			})
 		}
 	}
diff --git a/controller/relay-gemini.go b/controller/relay-gemini.go
index 0596e42..7235158 100644
--- a/controller/relay-gemini.go
+++ b/controller/relay-gemini.go
@@ -97,7 +97,7 @@ func requestOpenAI2Gemini(textRequest GeneralOpenAIRequest) *GeminiChatRequest {
 			Role: message.Role,
 			Parts: []GeminiPart{
 				{
-					Text: string(message.Content),
+					Text: message.StringContent(),
 				},
 			},
 		}
diff --git a/controller/relay-palm.go b/controller/relay-palm.go
index 4a8826d..aa96c0d 100644
--- a/controller/relay-palm.go
+++ b/controller/relay-palm.go
@@ -59,7 +59,7 @@ func requestOpenAI2PaLM(textRequest GeneralOpenAIRequest) *PaLMChatRequest {
 	}
 	for _, message := range textRequest.Messages {
 		palmMessage := PaLMChatMessage{
-			Content: string(message.Content),
+			Content: message.StringContent(),
 		}
 		if message.Role == "user" {
 			palmMessage.Author = "0"
diff --git a/controller/relay-tencent.go b/controller/relay-tencent.go
index c96e6d4..8db6492 100644
--- a/controller/relay-tencent.go
+++ b/controller/relay-tencent.go
@@ -84,7 +84,7 @@ func requestOpenAI2Tencent(request GeneralOpenAIRequest) *TencentChatRequest {
 		if message.Role == "system" {
 			messages = append(messages, TencentMessage{
 				Role:    "user",
-				Content: string(message.Content),
+				Content: message.StringContent(),
 			})
 			messages = append(messages, TencentMessage{
 				Role:    "assistant",
@@ -93,7 +93,7 @@ func requestOpenAI2Tencent(request GeneralOpenAIRequest) *TencentChatRequest {
 			continue
 		}
 		messages = append(messages, TencentMessage{
-			Content: string(message.Content),
+			Content: message.StringContent(),
 			Role:    message.Role,
 		})
 	}
diff --git a/controller/relay-xunfei.go b/controller/relay-xunfei.go
index b2b9158..c5191fd 100644
--- a/controller/relay-xunfei.go
+++ b/controller/relay-xunfei.go
@@ -81,7 +81,7 @@ func requestOpenAI2Xunfei(request GeneralOpenAIRequest, xunfeiAppId string, doma
 		if message.Role == "system" {
 			messages = append(messages, XunfeiMessage{
 				Role:    "user",
-				Content: string(message.Content),
+				Content: message.StringContent(),
 			})
 			messages = append(messages, XunfeiMessage{
 				Role:    "assistant",
@@ -90,7 +90,7 @@ func requestOpenAI2Xunfei(request GeneralOpenAIRequest, xunfeiAppId string, doma
 		} else {
 			messages = append(messages, XunfeiMessage{
 				Role:    message.Role,
-				Content: string(message.Content),
+				Content: message.StringContent(),
 			})
 		}
 	}
diff --git a/controller/relay-zhipu.go b/controller/relay-zhipu.go
index 5ad4151..bc8d201 100644
--- a/controller/relay-zhipu.go
+++ b/controller/relay-zhipu.go
@@ -114,7 +114,7 @@ func requestOpenAI2Zhipu(request GeneralOpenAIRequest) *ZhipuRequest {
 		if message.Role == "system" {
 			messages = append(messages, ZhipuMessage{
 				Role:    "system",
-				Content: string(message.Content),
+				Content: message.StringContent(),
 			})
 			messages = append(messages, ZhipuMessage{
 				Role:    "user",
@@ -123,7 +123,7 @@ func requestOpenAI2Zhipu(request GeneralOpenAIRequest) *ZhipuRequest {
 		} else {
 			messages = append(messages, ZhipuMessage{
 				Role:    message.Role,
-				Content: string(message.Content),
+				Content: message.StringContent(),
 			})
 		}
 	}
diff --git a/controller/relay.go b/controller/relay.go
index c835497..d5fdf8d 100644
--- a/controller/relay.go
+++ b/controller/relay.go
@@ -36,6 +36,14 @@ const (
 	ContentTypeImageURL = "image_url"
 )
 
+func (m Message) StringContent() string {
+	var stringContent string
+	if err := json.Unmarshal(m.Content, &stringContent); err == nil {
+		return stringContent
+	}
+	return string(m.Content)
+}
+
 func (m Message) ParseContent() []MediaMessage {
 	var contentList []MediaMessage
 	var stringContent string