diff --git a/designer-realize/src/main/java/com/fr/design/share/ui/generate/ShareMainPane.java b/designer-realize/src/main/java/com/fr/design/share/ui/generate/ShareMainPane.java
index 7bcad336f..5639b5957 100644
--- a/designer-realize/src/main/java/com/fr/design/share/ui/generate/ShareMainPane.java
+++ b/designer-realize/src/main/java/com/fr/design/share/ui/generate/ShareMainPane.java
@@ -818,14 +818,17 @@ public class ShareMainPane extends JPanel {
                 @Override
                 public void insertString(int offset, String str, AttributeSet attrSet) throws BadLocationException {
                     if (str == null) {
-                        return;
+                        throw new BadLocationException(null, offset);
                     }
                     int count = str.length();
                     for (int i = 0; i < count; i++) {
                         char c = str.charAt(i);
                         if (allowCharAsString.indexOf(c) < 0) {
                             java.awt.Toolkit.getDefaultToolkit().beep();
-                            return;
+                            // REPORT-63194
+                            // 合成文本，如中文等存在输入-删除-替换的机制 JTextComponent#replaceInputMethodText()
+                            // 所以这里不能直接return，而应该抛出异常中断后续字符处理，否则在处理中文等合成文本时会导致原有字符被删除
+                            throw new BadLocationException(str, offset);
                         }
                     }
                     super.insertString(offset, str, attrSet);