diff --git a/public/static/onlyOffice/editor.html b/public/static/onlyOffice/editor.html
index 77c006104..b92157117 100644
--- a/public/static/onlyOffice/editor.html
+++ b/public/static/onlyOffice/editor.html
@@ -44,8 +44,8 @@
   var fileSuffix = GetQueryValue('fileType')
     // 文档类word-text、表格类excel-spreadsheet、ppt类-presentation
     var documentType = ''
-    var arr_data_ppt = ['pdf', 'PDF', 'pptx', 'PPTX', 'ppt', 'PPT'];
-    var arr_data_word = ['pdf', 'PDF', 'doc','DOC', 'docx','DOCX'];
+    var arr_data_ppt = ['pptx', 'PPTX','pptx', 'PPTX', 'ppt', 'PPT'];
+    var arr_data_word = ['doc','DOC','doc','DOC', 'docx','DOCX'];
     var arr_data_xls = ['xls', 'XLS', 'xlsx', 'XLSX','.xls', '.XLS', '.xlsx', '.XLSX'];
 
     arr_data_ppt.find(function(value) {
diff --git a/public/static/onlyOffice/onlinePreview.html b/public/static/onlyOffice/onlinePreview.html
index 9494710b1..897dd02a4 100644
--- a/public/static/onlyOffice/onlinePreview.html
+++ b/public/static/onlyOffice/onlinePreview.html
@@ -41,8 +41,8 @@
   var fileSuffix = GetQueryValue('fileType')
     // 文档类word-text、表格类excel-spreadsheet、ppt类-presentation
     var documentType = ''
-    var arr_data_ppt = ['pdf', 'PDF', 'pptx', 'PPTX', 'ppt', 'PPT'];
-    var arr_data_word = ['pdf', 'PDF', 'doc','DOC', 'docx','DOCX'];
+    var arr_data_ppt = ['pptx', 'PPTX','pptx', 'PPTX', 'ppt', 'PPT'];
+    var arr_data_word = ['doc','DOC','doc','DOC', 'docx','DOCX'];
     var arr_data_xls = ['xls', 'XLS', 'xlsx', 'XLSX','.xls', '.XLS', '.xlsx', '.XLSX'];
 
     arr_data_ppt.find(function(value) {