diff --git a/packages/inula-intl/src/format/Translation.ts b/packages/inula-intl/src/format/Translation.ts
index b1f57f79..84b35baf 100644
--- a/packages/inula-intl/src/format/Translation.ts
+++ b/packages/inula-intl/src/format/Translation.ts
@@ -13,7 +13,6 @@
  * See the Mulan PSL v2 for more details.
  */
 
-import { UNICODE_REG } from '../constants';
 import { CompiledMessage, Locale, LocaleConfig, Locales } from '../types/types';
 import generateFormatters from './generateFormatters';
 import {FormatOptions, I18nCache} from '../types/interfaces';