Ext.create('Ext.form.Panel', { title: 'labelSeparator', renderTo: Ext.getBody(), items: [{ xtype: 'displayfield', name: 'table_name', fieldLabel: 'Table Name', value: 'aaaaa' }, { xtype: 'displayfield', name: 'column_name', fieldLabel: 'Column Name', labelSeparator : '', // use labelSeparator value: 'bbbbb' }] });