diff --git a/src/editor/core/range/RangeManager.ts b/src/editor/core/range/RangeManager.ts
index 3c093da..5ade74c 100644
--- a/src/editor/core/range/RangeManager.ts
+++ b/src/editor/core/range/RangeManager.ts
@@ -416,6 +416,7 @@ export class RangeManager {
     const elementList = this.draw.getElementList()
     const range = this.getRange()
     const { startIndex, endIndex } = range
+    if (!~startIndex && !~endIndex) return
     const startElement = elementList[startIndex]
     const endElement = elementList[endIndex]
     if (startIndex === endIndex) {