diff --git a/.changeset/fast-rivers-grin.md b/.changeset/fast-rivers-grin.md
new file mode 100644
index 0000000..edf9ed7
--- /dev/null
+++ b/.changeset/fast-rivers-grin.md
@@ -0,0 +1,17 @@
+---
+'@difizen/babel-preset-mana': patch
+'@difizen/mana-observable': patch
+'@difizen/umi-plugin-mana': patch
+'@difizen/mana-syringe': patch
+'@difizen/mana-common': patch
+'@difizen/mana-react': patch
+'@difizen/mana-react-example': patch
+'@difizen/mana-core': patch
+'@difizen/mana-l10n': patch
+'@difizen/mana-app': patch
+'@difizen/mana-umi-example': patch
+'@difizen/mana-ui': patch
+'@difizen/mana-docs': patch
+---
+
+fix: localStorage is not defined.
diff --git a/packages/mana-l10n/src/l10n/index.ts b/packages/mana-l10n/src/l10n/index.ts
index de681db..bc578f8 100644
--- a/packages/mana-l10n/src/l10n/index.ts
+++ b/packages/mana-l10n/src/l10n/index.ts
@@ -36,7 +36,10 @@ export enum L10nLang {
 }
 
 function getDefaultlang() {
-  const localeValue = localStorage?.getItem('locale') || locale;
+  let localeValue = locale;
+  if (typeof navigator === 'object') {
+    localeValue = localStorage?.getItem('locale') || locale;
+  }
   const localeStr = localeValue.toLowerCase();
   if (localeStr === 'zh' || localeStr.startsWith('zh-')) {
     return L10nLang.zhCN;