diff --git a/internal/domains/api/services/form_config_service.go b/internal/domains/api/services/form_config_service.go
index 95b0af4..e88fae6 100644
--- a/internal/domains/api/services/form_config_service.go
+++ b/internal/domains/api/services/form_config_service.go
@@ -523,7 +523,7 @@ func (s *FormConfigServiceImpl) generatePlaceholder(jsonTag string, fieldType st
 func (s *FormConfigServiceImpl) generateDescription(jsonTag string, validation string) string {
 	descMap := map[string]string{
 		"mobile_no":                "请输入11位手机号码",
-		"id_card":                  "请输入18位身份证号码",
+		"id_card":                  "请输入18位身份证号码最后一位如是字母请大写",
 		"name":                     "请输入真实姓名",
 		"man_name":                 "请输入男方真实姓名",
 		"woman_name":               "请输入女方真实姓名",