diff --git a/db.sqlite3 b/db.sqlite3
index 97ba841..c572389 100644
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diff --git a/media/201907/2019-07-28090944649358mrdoc_20190728.gif b/media/201907/2019-07-28090944649358mrdoc_20190728.gif
new file mode 100644
index 0000000..3c31908
Binary files /dev/null and b/media/201907/2019-07-28090944649358mrdoc_20190728.gif differ
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..4e54d4f
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diff --git a/template/app_doc/create_doc.html b/template/app_doc/create_doc.html
index 7fd390f..6415f5b 100644
--- a/template/app_doc/create_doc.html
+++ b/template/app_doc/create_doc.html
@@ -84,6 +84,8 @@
                     if(r.status){
                         //解析文集的下级文档
                         //console.log(r.data)
+                        $("#parent-doc").empty(); // 清空select选项
+                        $("#parent-doc").append("<option value=''></option>")
                         for(let i in r.data) {
                             $("#parent-doc").append("<option value='"+r.data[i][0]+"'>"+r.data[i][3]+r.data[i][1]+"</option>")
                         };