diff --git a/internal/handler/auth.go b/internal/handler/auth.go
new file mode 100644
index 0000000..061e03c
--- /dev/null
+++ b/internal/handler/auth.go
@@ -0,0 +1,45 @@
+package handler
+
+import (
+	"gotest/internal/service"
+
+	"github.com/gin-gonic/gin"
+)
+
+// AuthHandler 认证处理器
+type AuthHandler struct {
+	authService *service.AuthService
+}
+
+// NewAuthHandler 创建认证处理器
+func NewAuthHandler(authService *service.AuthService) *AuthHandler {
+	return &AuthHandler{authService: authService}
+}
+
+// Login 登录接口 POST /api/v1/auth/login
+func (h *AuthHandler) Login(c *gin.Context) {
+	var req struct {
+		Username string `json:"username" binding:"required"`
+		Password string `json:"password" binding:"required"`
+	}
+	if err := c.ShouldBindJSON(&req); err != nil {
+		FailBadRequest(c, "用户名和密码不能为空")
+		return
+	}
+
+	token, user, err := h.authService.Login(req.Username, req.Password)
+	if err != nil {
+		FailUnauthorized(c, err.Error())
+		return
+	}
+
+	Success(c, gin.H{
+		"token": token,
+		"user": gin.H{
+			"id":       user.ID,
+			"username": user.Username,
+			"role":     user.Role,
+			"avatar":   user.Avatar,
+		},
+	})
+}