diff --git a/mail-worker/src/hono/hono.js b/mail-worker/src/hono/hono.js
index f8c48bf..d385aa4 100644
--- a/mail-worker/src/hono/hono.js
+++ b/mail-worker/src/hono/hono.js
@@ -12,6 +12,19 @@ app.onError((err, c) => {
 	}else {
 		console.error(err);
 	}
+
+	if (err.message === `Cannot read properties of undefined (reading 'get')`) {
+		return c.text('初始化失败:KV数据库未绑定或变量名错误 Initialization failed: KV database not bound or invalid variable name');
+	}
+
+	if (err.message === `Cannot read properties of undefined (reading 'put')`) {
+		return c.text('初始化失败:KV数据库未绑定或变量名错误 Initialization failed: KV database not bound or invalid variable name');
+	}
+
+	if (err.message === `Cannot read properties of undefined (reading 'prepare')`) {
+		return c.text('初始化失败:D1数据库未绑定或变量名错误 Initialization failed: D1 database not bound or invalid variable name');
+	}
+
 	return c.json(result.fail(err.message, err.code));
 });
 
diff --git a/mail-worker/src/i18n/en.js b/mail-worker/src/i18n/en.js
index 169abbc..48f157a 100644
--- a/mail-worker/src/i18n/en.js
+++ b/mail-worker/src/i18n/en.js
@@ -45,6 +45,7 @@ const en = {
 	roleNameExist: 'Role name already exists',
 	delDefRole: 'Default role cannot be deleted',
 	notJsonDomain: 'Environment variable "domain" must be in JSON format',
+	noDomainVariable: 'Environment variable domain cannot be empty',
 	noOsUpBack: 'Cannot upload background: R2 object storage not configured',
 	noOsDomainUpBack: 'Cannot upload background: R2 domain not configured',
 	starNotExistEmail: 'Starred email does not exist',
diff --git a/mail-worker/src/i18n/zh.js b/mail-worker/src/i18n/zh.js
index dae4d04..9924dc4 100644
--- a/mail-worker/src/i18n/zh.js
+++ b/mail-worker/src/i18n/zh.js
@@ -45,6 +45,7 @@ const zh = {
 	roleNameExist: '身份名已存在',
 	delDefRole: '默认身份不能删除',
 	notJsonDomain: '环境变量domain必须是JSON类型',
+	noDomainVariable: '环境变量domain不能为空',
 	noOsUpBack: 'r2对象存储未配置不能上传背景',
 	noOsDomainUpBack: 'r2域名未配置不能上传背景',
 	starNotExistEmail: '星标的邮件不存在',
diff --git a/mail-worker/src/service/setting-service.js b/mail-worker/src/service/setting-service.js
index b69ad62..c4fb661 100644
--- a/mail-worker/src/service/setting-service.js
+++ b/mail-worker/src/service/setting-service.js
@@ -21,8 +21,10 @@ const settingService = {
 	},
 
 	async query(c) {
+
 		const setting = await c.env.kv.get(KvConst.SETTING, { type: 'json' });
 		let domainList = c.env.domain;
+
 		if (typeof domainList === 'string') {
 			try {
 				domainList = JSON.parse(domainList)
@@ -30,6 +32,11 @@ const settingService = {
 				throw new BizError(t('notJsonDomain'));
 			}
 		}
+
+		if (!c.env.domain) {
+			throw new BizError(t('noDomainVariable'));
+		}
+
 		domainList = domainList.map(item => '@' + item);
 		setting.domainList = domainList;
 		return setting;