diff --git a/app/views/my/clear_user_avatar_temp.js.erb b/app/views/my/clear_user_avatar_temp.js.erb
index 1d1ef48f0..3278adcb5 100644
--- a/app/views/my/clear_user_avatar_temp.js.erb
+++ b/app/views/my/clear_user_avatar_temp.js.erb
@@ -2,7 +2,7 @@
     $('#ajax-modal').html($("#nh_tx_dialog_html").html());
     showModal('ajax-modal','460px');
     $('#ajax-modal').siblings().hide();
-    $('#ajax-modal').parent().removeClass("alert_praise");
-    //$('#ajax-modal').parent().css("top","").css("left","");
+    $('#ajax-modal').parent().removeClass("alert_praise").removeClass("copyCoursePopup");
+    $('#ajax-modal').parent().css("top","30%").css("left","40%");
     $('#ajax-modal').parent().addClass("alert_box");
     $('#ajax-modal').parent().css("border", "3px solid #269ac9").css("border-radius", "0").css(" -webkit-border-radius", "0").css(" -moz-border-radius", "0");
\ No newline at end of file
diff --git a/app/views/users/_user_homework_form.html.erb b/app/views/users/_user_homework_form.html.erb
index 9457ae3ed..b3f9970c6 100644
--- a/app/views/users/_user_homework_form.html.erb
+++ b/app/views/users/_user_homework_form.html.erb
@@ -177,8 +177,9 @@
         <label class="fl c_grey f14" style="margin-top: 4px;">发布日期(可选)：</label>
     <%# end %>
     <div class="calendar_div fl">
-      <input  type="text" name="homework_common[publish_time]" id="homework_publish_time" class="InputBox fl W120 calendar_input" readonly="readonly" value="<%= homework.publish_time%>"  >
-      <% if homework.homework_detail_manual.comment_status.to_i == 0 %>
+      <% allow_edit = homework.student_works.has_committed.count == 0 && homework.student_work_projects.count ==0 %>
+      <input title="<%=allow_edit ? '' : '已有学生提交作品或关联项目，发布日期不可再编辑' %>" type="text" name="homework_common[publish_time]" id="homework_publish_time" class="InputBox fl W120 calendar_input" readonly="readonly" value="<%= homework.publish_time%>"  >
+      <% if allow_edit %>
         <%= calendar_for('homework_publish_time')%>
       <% end %>
     </div>