diff --git a/relay/adaptor/gemini/main.go b/relay/adaptor/gemini/main.go
index 3d0fe901..9270e7f7 100644
--- a/relay/adaptor/gemini/main.go
+++ b/relay/adaptor/gemini/main.go
@@ -93,22 +93,13 @@ func ConvertRequest(textRequest model.GeneralOpenAIRequest) *ChatRequest {
 		}
 	}
 	if textRequest.Tools != nil {
-		functions := make([]model.Function, 0, len(textRequest.Tools))
-		for _, tool := range textRequest.Tools {
-			functions = append(functions, tool.Function)
-		}
-		geminiRequest.Tools = []ChatTools{
-			{
-				FunctionDeclarations: functions,
-			},
-		}
-	} else if textRequest.Functions != nil {
-		geminiRequest.Tools = []ChatTools{
-			{
-				FunctionDeclarations: textRequest.Functions,
-			},
-		}
+		geminiRequest.Tools = textRequest.Tools
 	}
+
+	if textRequest.Functions != nil {
+		geminiRequest.Tools = textRequest.Functions
+	}
+
 	shouldAddDummyModelMessage := false
 	for _, message := range textRequest.Messages {
 		content := ChatContent{
diff --git a/relay/adaptor/gemini/model.go b/relay/adaptor/gemini/model.go
index 8fd96622..0218766a 100644
--- a/relay/adaptor/gemini/model.go
+++ b/relay/adaptor/gemini/model.go
@@ -4,7 +4,7 @@ type ChatRequest struct {
 	Contents          []ChatContent        `json:"contents"`
 	SafetySettings    []ChatSafetySettings `json:"safety_settings,omitempty"`
 	GenerationConfig  ChatGenerationConfig `json:"generation_config,omitempty"`
-	Tools             []ChatTools          `json:"tools,omitempty"`
+	Tools             interface{}          `json:"tools,omitempty"`
 	SystemInstruction *ChatContent         `json:"system_instruction,omitempty"`
 }