diff --git a/packages/uni-app-plus-nvue/dist/index.js b/packages/uni-app-plus-nvue/dist/index.js
index aa87d7b62adca56ca23c6feb1d2fa95e403f2d84..9db807746f02fe0f8745121f243c41b459920111 100644
--- a/packages/uni-app-plus-nvue/dist/index.js
+++ b/packages/uni-app-plus-nvue/dist/index.js
@@ -2602,6 +2602,7 @@ var serviceContext = (function () {
       type: Object,
       validator (value, params) {
         params.header = value || {};
+        params.header['content-type'] = params.header['content-type'] || 'application/json';
       }
     },
     dataType: {