diff --git a/Application/Common/Common/function.php b/Application/Common/Common/function.php
index 1c86b10b5..4d3b136fa 100644
--- a/Application/Common/Common/function.php
+++ b/Application/Common/Common/function.php
@@ -1011,25 +1011,25 @@ function get_cover($cover_id, $field = null, $root = 1, $flag = true)
         if (!empty($picture['oss_url'])) {
             return $picture['oss_url'];
         } else {
-            return 'http://' . $_SERVER['HTTP_HOST'] . __ROOT__ . $picture['path'];
+            return '//' . $_SERVER['HTTP_HOST'] . __ROOT__ . $picture['path'];
         }
     } elseif (get_tool_status("qiniu_storage") == 1) {
         if (!empty($picture['url'])) {
             return $picture['url'];
         } else {
-            return 'http://' . $_SERVER['HTTP_HOST'] . __ROOT__ . $picture['path'];
+            return '//' . $_SERVER['HTTP_HOST'] . __ROOT__ . $picture['path'];
         }
     } elseif (get_tool_status("cos_storage") == 1) {
         if (!empty($picture['url'])) {
             return $picture['url'];
         } else {
-            return 'http://' . $_SERVER['HTTP_HOST'] . __ROOT__ . $picture['path'];
+            return '//' . $_SERVER['HTTP_HOST'] . __ROOT__ . $picture['path'];
         }
     } elseif (get_tool_status("bos_storage") == 1) {
         if (!empty($picture['bos_url'])) {
             return $picture['bos_url'];
         } else {
-            return 'http://' . $_SERVER['HTTP_HOST'] . __ROOT__ . $picture['path'];
+            return '//' . $_SERVER['HTTP_HOST'] . __ROOT__ . $picture['path'];
         }
     } else {
         if ($field == 'path') {