diff --git a/collection/opendb-device/collection.json b/collection/opendb-device/collection.json
index 273ede0..8bb24ab 100644
--- a/collection/opendb-device/collection.json
+++ b/collection/opendb-device/collection.json
@@ -79,7 +79,7 @@
             },
             "network_model":{
                 "bsonType":"string",
-                "description":"设备网络型号wifi/3G/4G/"
+                "description":"设备网络型号wifi\/3G\/4G\/"
             },
             "window_width":{
                 "bsonType":"string",