diff --git a/app_admin/views.py b/app_admin/views.py
index b019c90..c46a61a 100644
--- a/app_admin/views.py
+++ b/app_admin/views.py
@@ -144,7 +144,7 @@ def register(request):
                         errormsg = _('用户名已被使用！')
                         return render(request, 'register.html', locals())
                     elif re.match('^[0-9a-z]+$',username) is None:
-                        errormsg = _('用户名只能为英文数字组合')
+                        errormsg = _('用户名只能为小写英文+数字组合')
                         return render(request, 'register.html', locals())
                     elif len(username) < 5:
                         errormsg = _('用户名必须大于等于5位！')
diff --git a/template/register.html b/template/register.html
index 633021f..bdd6e47 100644
--- a/template/register.html
+++ b/template/register.html
@@ -69,7 +69,7 @@
                 {% endif %}
                 <div class="layui-form-item">
                     <div class="layui-input-inline">
-                      <input type="text" name="username" required  lay-verify="required" placeholder="请输入用户名，不少于5位" autocomplete="off" class="layui-input" value="{{username}}">
+                      <input type="text" name="username" required  lay-verify="required" placeholder="请输入用户名，小写英文字母或数字，不少于5位" autocomplete="off" class="layui-input" value="{{username}}">
                     </div>
                 </div>
                 <div class="layui-form-item">