diff --git a/simple-mind-map/src/parse/xmind.js b/simple-mind-map/src/parse/xmind.js
index c2a2db76..294e8ded 100644
--- a/simple-mind-map/src/parse/xmind.js
+++ b/simple-mind-map/src/parse/xmind.js
@@ -198,7 +198,7 @@ const transformOldXmind = content => {
       childrenItem.elements.length > 0
     ) {
       const children = getElementsByType(childrenItem.elements, 'attached')
-      children.forEach((item, index) => {
+      ;(children || []).forEach((item, index) => {
         const newChild = {}
         newNode.children.push(newChild)
         if (childrenSummary[index]) {