diff --git a/packages/core/src/utils/getMarkAttrs.ts b/packages/core/src/utils/getMarkAttrs.ts
index 3dd7ae8f..3ab1842e 100644
--- a/packages/core/src/utils/getMarkAttrs.ts
+++ b/packages/core/src/utils/getMarkAttrs.ts
@@ -12,7 +12,7 @@ export default function getMarkAttrs(state: EditorState, type: MarkType) {
   const mark = marks.find(markItem => markItem.type.name === type.name)
 
   if (mark) {
-    return mark.attrs
+    return { ...mark.attrs }
   }
 
   return {}
diff --git a/packages/core/src/utils/getNodeAttrs.ts b/packages/core/src/utils/getNodeAttrs.ts
index 3f24f340..77eaaea2 100644
--- a/packages/core/src/utils/getNodeAttrs.ts
+++ b/packages/core/src/utils/getNodeAttrs.ts
@@ -14,7 +14,7 @@ export default function getNodeAttrs(state: EditorState, type: NodeType) {
     .find(nodeItem => nodeItem.type.name === type.name)
 
   if (node) {
-    return node.attrs
+    return { ...node.attrs }
   }
 
   return {}