diff --git a/api/core/types/config.go b/api/core/types/config.go
index 29169539..01b6bc02 100644
--- a/api/core/types/config.go
+++ b/api/core/types/config.go
@@ -162,10 +162,11 @@ type SystemConfig struct {
 	SdNegPrompt string `json:"sd_neg_prompt"` // SD 默认反向提示词
 	MjMode      string `json:"mj_mode"`       // midjourney 默认的API模式，relax, fast, turbo
 
-	IndexNavs   []int  `json:"index_navs"`    // 首页显示的导航菜单
-	Copyright   string `json:"copyright"`     // 版权信息
-	ICP         string `json:"icp"`           // ICP 备案号
-	MarkMapText string `json:"mark_map_text"` // 思维导入的默认文本
+	IndexNavs       []int  `json:"index_navs"`       // 首页显示的导航菜单
+	Copyright       string `json:"copyright"`        // 版权信息
+	DefaultNickname string `json:"default_nickname"` // 默认昵称
+	ICP             string `json:"icp"`              // ICP 备案号
+	MarkMapText     string `json:"mark_map_text"`    // 思维导入的默认文本
 
 	EnabledVerify    bool     `json:"enabled_verify"`     // 是否启用验证码
 	EmailWhiteList   []string `json:"email_white_list"`   // 邮箱白名单列表
diff --git a/api/handler/user_handler.go b/api/handler/user_handler.go
index dee60047..2958e14c 100644
--- a/api/handler/user_handler.go
+++ b/api/handler/user_handler.go
@@ -170,10 +170,15 @@ func (h *UserHandler) Register(c *gin.Context) {
 	if data.InviteCode != "" {
 		user.Power += h.App.SysConfig.InvitePower
 	}
+
 	if h.licenseService.GetLicense().Configs.DeCopy {
 		user.Nickname = fmt.Sprintf("用户@%d", utils.RandomNumber(6))
 	} else {
-		user.Nickname = fmt.Sprintf("极客学长@%d", utils.RandomNumber(6))
+		defaultNickname := h.App.SysConfig.DefaultNickname
+		if defaultNickname == "" {
+			defaultNickname = "极客学长"
+		}
+		user.Nickname = fmt.Sprintf("%s@%d", defaultNickname, utils.RandomNumber(6))
 	}
 
 	tx := h.DB.Begin()
diff --git a/web/src/views/Suno.vue b/web/src/views/Suno.vue
index b2bd4f89..55d0a497 100644
--- a/web/src/views/Suno.vue
+++ b/web/src/views/Suno.vue
@@ -293,6 +293,7 @@ const models = ref([
   { label: "v3.0", value: "chirp-v3-0" },
   { label: "v3.5", value: "chirp-v3-5" },
   { label: "v4.0", value: "chirp-v4" },
+  { label: "v4.5", value: "chirp-auk" },
 ]);
 const tags = ref([
   { label: "女声", value: "female vocals" },
@@ -313,7 +314,7 @@ const tags = ref([
   { label: "嘻哈", value: "hip hop" },
 ]);
 const data = ref({
-  model: "chirp-v3-0",
+  model: "chirp-auk",
   tags: "",
   lyrics: "",
   prompt: "",
diff --git a/web/src/views/admin/SysConfig.vue b/web/src/views/admin/SysConfig.vue
index 36802680..f3820f46 100644
--- a/web/src/views/admin/SysConfig.vue
+++ b/web/src/views/admin/SysConfig.vue
@@ -57,6 +57,10 @@
                   <el-input v-model="system['copyright']" placeholder="更改此选项需要获取 License 授权" />
                 </el-form-item>
 
+                <el-form-item label="默认昵称" prop="default_nickname">
+                  <el-input v-model="system['default_nickname']" placeholder="默认昵称" />
+                </el-form-item>
+
                 <el-form-item label="ICP 备案号" prop="icp">
                   <el-input v-model="system['icp']" placeholder="请输入 ICP 备案号" />
                 </el-form-item>