diff --git a/models/defaults.go b/models/defaults.go
index a37ecac..8c43b71 100644
--- a/models/defaults.go
+++ b/models/defaults.go
@@ -113,4 +113,5 @@ Neue',Helvetica,Arial,sans-serif; box-sizing: border-box; font-size: 14px; verti
 	{Name: "pwa_theme_color", Value: "#000000", Type: "pwa"},
 	{Name: "pwa_background_color", Value: "#ffffff", Type: "pwa"},
 	{Name: "office_preview_service", Value: "https://view.officeapps.live.com/op/view.aspx?src={$src}", Type: "preview"},
+	{Name: "show_app_promotion", Value: "1", Type: "mobile"},
 }
diff --git a/pkg/serializer/setting.go b/pkg/serializer/setting.go
index d3b2395..2c1a345 100644
--- a/pkg/serializer/setting.go
+++ b/pkg/serializer/setting.go
@@ -22,6 +22,7 @@ type SiteConfig struct {
 	CaptchaType          string `json:"captcha_type"`
 	TCaptchaCaptchaAppId string `json:"tcaptcha_captcha_app_id"`
 	RegisterEnabled      bool   `json:"registerEnabled"`
+	AppPromotion         bool   `json:"app_promotion"`
 }
 
 type task struct {
@@ -83,6 +84,7 @@ func BuildSiteConfig(settings map[string]string, user *model.User) Response {
 			CaptchaType:          checkSettingValue(settings, "captcha_type"),
 			TCaptchaCaptchaAppId: checkSettingValue(settings, "captcha_TCaptcha_CaptchaAppId"),
 			RegisterEnabled:      model.IsTrueVal(checkSettingValue(settings, "register_enabled")),
+			AppPromotion:         model.IsTrueVal(checkSettingValue(settings, "show_app_promotion")),
 		}}
 	return res
 }
diff --git a/routers/controllers/site.go b/routers/controllers/site.go
index 414ebb5..d462a9d 100644
--- a/routers/controllers/site.go
+++ b/routers/controllers/site.go
@@ -27,6 +27,7 @@ func SiteConfig(c *gin.Context) {
 		"captcha_type",
 		"captcha_TCaptcha_CaptchaAppId",
 		"register_enabled",
+		"show_app_promotion",
 	)
 
 	// 如果已登录，则同时返回用户信息和标签