diff --git a/simple-mind-map/src/themes/default.js b/simple-mind-map/src/themes/default.js
index d0baa737..4960f04a 100644
--- a/simple-mind-map/src/themes/default.js
+++ b/simple-mind-map/src/themes/default.js
@@ -94,7 +94,7 @@ export default {
     fontFamily: '微软雅黑, Microsoft YaHei',
     color: '#565656',
     fontSize: 16,
-    fontWeight: 'noraml',
+    fontWeight: 'normal',
     fontStyle: 'normal',
     lineHeight: 1.5,
     borderColor: '#549688',
@@ -116,7 +116,7 @@ export default {
     fontFamily: '微软雅黑, Microsoft YaHei',
     color: '#6a6d6c',
     fontSize: 14,
-    fontWeight: 'noraml',
+    fontWeight: 'normal',
     fontStyle: 'normal',
     lineHeight: 1.5,
     borderColor: 'transparent',
@@ -138,7 +138,7 @@ export default {
     fontFamily: '微软雅黑, Microsoft YaHei',
     color: '#565656',
     fontSize: 16,
-    fontWeight: 'noraml',
+    fontWeight: 'normal',
     fontStyle: 'normal',
     lineHeight: 1.5,
     borderColor: '#549688',