diff --git a/doric-iOS/Pod/Classes/Shader/DoricInputNode.m b/doric-iOS/Pod/Classes/Shader/DoricInputNode.m
index e78b7b9c..925a161a 100644
--- a/doric-iOS/Pod/Classes/Shader/DoricInputNode.m
+++ b/doric-iOS/Pod/Classes/Shader/DoricInputNode.m
@@ -227,6 +227,8 @@ - (BOOL)textViewShouldEndEditing:(UITextView *)textView {
 }
 
 - (void)textViewDidChange:(UITextView *)textView {
+    if (textView.markedTextRange) return;
+    
     if (self.maxLength) {
         UITextRange *selectedRange = [textView markedTextRange];
         UITextPosition *pos = [textView positionFromPosition:selectedRange.start offset:0];