diff --git a/app/views/exercise/_exercise_student_result.html.erb b/app/views/exercise/_exercise_student_result.html.erb
index 7805cb60..a76f7796 100755
--- a/app/views/exercise/_exercise_student_result.html.erb
+++ b/app/views/exercise/_exercise_student_result.html.erb
@@ -325,7 +325,7 @@
                       smartIndent: true,//智能换行
                       styleActiveLine: true,
                       lint: true,
-                      readOnly: "nocursor"
+                      readOnly: true
                   });
                   $(function () {
                       shixun_show_CodeMirror_<%= exercise_challenge.try(:id) %>.setSize("auto", "auto");