diff --git a/config/config.go b/config/config.go
index 15bf20b..a66271e 100644
--- a/config/config.go
+++ b/config/config.go
@@ -18,6 +18,7 @@ var (
 	mu   sync.RWMutex
 
 	aiBalancer *AIBalancer
+	balancerMu sync.RWMutex
 )
 
 type Config struct {
@@ -332,7 +333,16 @@ func (b *AIBalancer) Next() (*AIConfig, error) {
 	return &highPriorityAIs[0], nil
 }
 
-// 添加获取 AIBalancer 的方法
+// ResetAIBalancer 重置 AI 负载均衡器
+func ResetAIBalancer(ais []AIConfig) {
+	balancerMu.Lock()
+	defer balancerMu.Unlock()
+	aiBalancer = NewAIBalancer(ais)
+}
+
+// GetAIBalancer 获取当前的 AI 负载均衡器
 func GetAIBalancer() *AIBalancer {
+	balancerMu.RLock()
+	defer balancerMu.RUnlock()
 	return aiBalancer
 }
diff --git a/handlers/config.go b/handlers/config.go
index 879f232..825ac7f 100644
--- a/handlers/config.go
+++ b/handlers/config.go
@@ -135,8 +135,13 @@ func (h *ConfigHandler) UpdateConfig(c *gin.Context) {
 		return
 	}
 
-	log.Printf("配置更新成功")
+	// 更新运行时配置
 	h.cfg = &newConfig
+
+	// 重新初始化 AI 负载均衡器
+	config.ResetAIBalancer(newConfig.AIs)
+
+	log.Printf("配置更新成功")
 	c.JSON(http.StatusOK, gin.H{"message": "配置更新成功"})
 }
 
diff --git a/main.go b/main.go
index 6998649..0a0395f 100644
--- a/main.go
+++ b/main.go
@@ -6,8 +6,9 @@ import (
 	"code-review/services"
 	"code-review/services/ai"
 	"fmt"
-	"github.com/gin-gonic/gin"
 	"log"
+
+	"github.com/gin-gonic/gin"
 )
 
 func main() {
@@ -22,10 +23,10 @@ func main() {
 	}
 
 	// 初始化 AI 负载均衡器
-	aiBalancer := config.NewAIBalancer(cfg.AIs)
+	config.ResetAIBalancer(cfg.AIs)
 
 	// 获取一个 AI 配置
-	aiConfig, err := aiBalancer.Next()
+	aiConfig, err := config.GetAIBalancer().Next()
 	if err != nil {
 		log.Fatalf("获取 AI 配置失败: %v", err)
 	}