diff --git a/src/core/helpers/protocol/network/request.js b/src/core/helpers/protocol/network/request.js
index fd09c0892128ce2434d86e850f39249c5461b5ac..6709d0e15baa9c93860e707514bd6722a05a4187 100644
--- a/src/core/helpers/protocol/network/request.js
+++ b/src/core/helpers/protocol/network/request.js
@@ -78,6 +78,7 @@ export const request = {
     type: Object,
     validator (value, params) {
       params.header = value || {}
+      params.header['content-type'] = params.header['content-type'] || 'application/json'
     }
   },
   dataType: {
@@ -93,4 +94,4 @@ export const request = {
       params.responseType = Object.values(responseType).indexOf(value) < 0 ? responseType.TEXT : value
     }
   }
-}
+}