diff --git a/designer_base/src/com/fr/design/editor/editor/ColumnSelectedEditor.java b/designer_base/src/com/fr/design/editor/editor/ColumnSelectedEditor.java
index 0f1c50a5fd..71014d4c8a 100644
--- a/designer_base/src/com/fr/design/editor/editor/ColumnSelectedEditor.java
+++ b/designer_base/src/com/fr/design/editor/editor/ColumnSelectedEditor.java
@@ -36,8 +36,12 @@ public class ColumnSelectedEditor extends Editor<SimpleDSColumn> {
 
 			@Override
 			public void itemStateChanged(ItemEvent e) {
+                TableDataWrapper tableDataWrapper = tableDataComboBox.getSelectedItem();
+                if (tableDataWrapper == null) {
+                    return;
+                }
                 //这边需要重新初始化columnNames, 否则nameList长度和columnNames长度不同导致出錯。
-                List<String> nameList = tableDataComboBox.getSelectedItem().calculateColumnNameList();
+                List<String> nameList = tableDataWrapper.calculateColumnNameList();
                 columnNames = new String[nameList.size()];
 				columnNames = tableDataComboBox.getSelectedItem().calculateColumnNameList().toArray(columnNames);
 				columnNameComboBox.removeAllItems();
@@ -64,7 +68,7 @@ public class ColumnSelectedEditor extends Editor<SimpleDSColumn> {
 		dsColumn.setDsName(tableDataWrappe.getTableDataName());
 		TableDataColumn column;
 		String columnExp = (String) this.columnNameComboBox.getSelectedItem();
-		if (StringUtils.isNotBlank(columnExp) && (columnExp.length() > 0 && columnExp.charAt(0) == '#') && !columnExp.endsWith("#")) {
+		if (StringUtils.isNotBlank(columnExp) && checkColumnExp(columnExp)) {
 			String number = columnExp.substring(1);
 			Pattern pattern = Pattern.compile("[^\\d]");
 			if (pattern.matcher(number).find()) {
@@ -80,6 +84,10 @@ public class ColumnSelectedEditor extends Editor<SimpleDSColumn> {
 		return dsColumn;
 	}
 
+	private boolean checkColumnExp (String columnExp) {
+		return (columnExp.length() > 0 && columnExp.charAt(0) == '#') && !columnExp.endsWith("#");
+	}
+
 	public String getIconName() {
 		return "ds_column";
 	}