diff --git a/.env.example b/.env.example
new file mode 100644
index 0000000..296c8b3
--- /dev/null
+++ b/.env.example
@@ -0,0 +1,2 @@
+NOCODB_TOKEN=
+NOCODB_LIST_URL=https://nocodb.example.com/api/v2/tables/xxx/records
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
index 2309cc8..d1a5195 100644
--- a/.gitignore
+++ b/.gitignore
@@ -79,6 +79,7 @@ web_modules/
 .env.test.local
 .env.production.local
 .env.local
+env.js
 
 # parcel-bundler cache (https://parceljs.org/)
 .cache
diff --git a/content.js b/content.js
index f414c96..91f6361 100644
--- a/content.js
+++ b/content.js
@@ -9,19 +9,6 @@ const PEOPLE_PICKER_SEL_PREFIX = "people-picker-selected-user-";
 let debounceTimer = null;
 let isMutating = false;
 
-async function saveAlias(id, alias) {
-    const key = id.replace(PERSON_ID_PREFIX, "");
-    const result = await chrome.storage.local.get('aliases');
-    const aliases = result.aliases || {};
-    // 新的别名为空就删除
-    if (alias) {
-        aliases[key] = alias;
-    } else {
-        delete aliases[key];
-    }
-    await chrome.storage.local.set({ aliases });
-}
-
 async function getAlias(id) {
     const key = id.replace(PERSON_ID_PREFIX, "");
     const result = await chrome.storage.local.get('aliases');
@@ -34,44 +21,37 @@ function applyAliasAndButton(el) {
     const id = el.id;
     if (!id || !id.startsWith(PERSON_ID_PREFIX)) return;
 
+    const rawId = id.replace(PERSON_ID_PREFIX, "");
+
     const existingBtn = document.querySelector(`[data-floating-btn-for="${id}"]`);
     if (!existingBtn) {
         const rect = el.getBoundingClientRect();
 
         const button = document.createElement('button');
-        button.textContent = '设置别名';
+        button.textContent = '显示ID'; // 改为显示ID
         button.style.position = 'fixed';
         button.style.left = `${rect.left + window.scrollX}px`;
         button.style.top = `${rect.bottom + window.scrollY + 20}px`;
         button.style.zIndex = '99999';
         button.style.padding = '4px 8px';
         button.style.fontSize = '12px';
-        button.style.backgroundColor = '#0078d4';
+        button.style.backgroundColor = '#6c757d'; // 灰色，表示只是信息查看
         button.style.color = '#fff';
         button.style.border = 'none';
         button.style.borderRadius = '4px';
         button.style.cursor = 'pointer';
         button.setAttribute('data-floating-btn-for', id);
 
-        button.addEventListener('click', async () => {
-            const current = (await getAlias(id.replace(PERSON_ID_PREFIX, ""))) || document.getElementById(id)?.textContent || '';
-            const newAlias = prompt("请输入别名：", current);
-            // 如果是空字符串还是得进入
-            if (newAlias !== null) {
-                const el = document.getElementById(id); // 🔥 重新获取最新的元素
-                if (el && newAlias) el.textContent = newAlias.trim();
-                await saveAlias(id.replace(PERSON_ID_PREFIX, ""), newAlias.trim());
-            }
-            if (newAlias === "") {
-                alert("别名已删除");
-            }
+        button.addEventListener('click', () => {
+             // 弹窗显示 ID，方便复制
+             prompt("该用户的账号ID为 (请复制):", rawId);
         });
 
         document.body.appendChild(button);
     }
 
     // 应用别名（异步）
-    getAlias(id.replace(PERSON_ID_PREFIX, "")).then(alias => {
+    getAlias(rawId).then(alias => {
         if (alias && el.textContent !== alias) {
             el.textContent = alias;
         }
@@ -417,6 +397,25 @@ function init() {
         subtree: true,
     });
 
+    // 自动同步检查
+    chrome.storage.local.get('lastSync').then(({ lastSync }) => {
+        const now = Date.now();
+        // 24 小时 = 86400000 ms
+        if (!lastSync || (now - lastSync > 86400000)) {
+            console.log("Teams Alias: 正在进行后台同步...");
+            if (typeof fetchAliasesFromDB === 'function') {
+                fetchAliasesFromDB().then(aliases => {
+                    chrome.storage.local.set({ aliases, lastSync: now });
+                    console.log("Teams Alias: 自动同步成功");
+                }).catch(err => {
+                    console.error("Teams Alias: 自动同步失败", err);
+                });
+            } else {
+                console.warn("Teams Alias: fetchAliasesFromDB 未定义，无法同步。");
+            }
+        }
+    });
+
     applyToAll(); // 初始执行
 
     // 兜底：每 2 秒再扫一次（避免漏掉异步更新）
diff --git a/manifest.json b/manifest.json
index a010f07..2ccd143 100644
--- a/manifest.json
+++ b/manifest.json
@@ -1,7 +1,7 @@
 {
     "manifest_version": 3,
     "name": "Teams 别名管理",
-    "version": "0.1.0",
+    "version": "0.2.0",
     "icons": {
         "16": "icons/teams-alias-16.png",
         "32": "icons/teams-alias-32.png",
@@ -10,11 +10,14 @@
     },
     "description": "给 Teams 好友设置别名",
     "permissions": ["storage", "scripting"],
-    "host_permissions": ["https://teams.live.com/v2*"],
+    "host_permissions": [
+        "https://teams.live.com/v2*",
+        "https://nocodb.example.com/*"
+    ],
     "content_scripts": [
         {
             "matches": ["https://teams.live.com/v2*"],
-            "js": ["content.js"]
+            "js": ["env.js", "utils.js", "content.js"]
         }
     ],
     "action": {
diff --git a/package.json b/package.json
index b93586a..88dd897 100644
--- a/package.json
+++ b/package.json
@@ -1,8 +1,9 @@
 {
     "name": "teams-alias",
-    "version": "0.1.0",
+    "version": "0.2.0",
     "main": "index.js",
     "scripts": {
+        "build": "node scripts/generate-env.js",
         "test": "echo \"Error: no test specified\" && exit 1"
     },
     "author": "",
diff --git a/popup.html b/popup.html
index 0755758..22e8cc7 100644
--- a/popup.html
+++ b/popup.html
@@ -55,10 +55,10 @@
 </head>
 <body>
 <h3>Teams 别名管理</h3>
+<button id="sync">立即同步</button>
 <button id="export">导出</button>
-<button id="import">覆盖导入</button>
-<button id="update-import">合并导入</button>
-<input type="file" id="fileInput" accept="application/json" />
+<script src="env.js"></script>
+<script src="utils.js"></script>
 <script src="popup.js"></script>
 </body>
 </html>
diff --git a/popup.js b/popup.js
index db1a793..dfa0d6b 100644
--- a/popup.js
+++ b/popup.js
@@ -17,48 +17,26 @@ document.getElementById('export').addEventListener('click', async () => {
     URL.revokeObjectURL(url);
 });
 
-// 通用导入处理函数
-function handleFileImport(mode = 'overwrite') {
-    const fileInput = document.getElementById('fileInput');
+// 手动同步
+document.getElementById('sync').addEventListener('click', async () => {
+    const btn = document.getElementById('sync');
+    const originalText = btn.textContent;
+    btn.textContent = '同步中...';
+    btn.disabled = true;
 
-    const handler = async (e) => {
-        const file = e.target.files[0];
-        if (!file) return;
+    try {
+        if (typeof fetchAliasesFromDB !== 'function') {
+            throw new Error("utils.js not loaded properly");
+        }
 
-        const reader = new FileReader();
-        reader.onload = async function (event) {
-            try {
-                const importedData = JSON.parse(event.target.result);
-                if (typeof importedData !== 'object' || importedData === null) {
-                    alert('文件格式错误');
-                    return;
-                }
-
-                const { aliases: existingAliases = {} } = await chrome.storage.local.get('aliases');
-
-                const updatedAliases = (mode === 'merge')
-                    ? { ...importedData, ...existingAliases }  // 保留现有的不被导入的覆盖
-                    : importedData;
-
-                await chrome.storage.local.set({ aliases: updatedAliases });
-
-                alert(mode === 'merge' ? '导入并合并成功' : '导入成功');
-            } catch (err) {
-                alert('无法解析 JSON 文件');
-            } finally {
-                fileInput.removeEventListener('change', handler);
-                fileInput.value = ''; // 重置 input 以便后续重复导入同一文件
-            }
-        };
-        reader.readAsText(file);
-    };
-
-    fileInput.addEventListener('change', handler, { once: true });
-    fileInput.click();
-}
-
-// 导入（覆盖）
-document.getElementById('import').addEventListener('click', () => handleFileImport('overwrite'));
-
-// 更新导入（合并）
-document.getElementById('update-import').addEventListener('click', () => handleFileImport('merge'));
+        const aliases = await fetchAliasesFromDB();
+        await chrome.storage.local.set({ aliases, lastSync: Date.now() });
+        alert(`同步成功！共获取 ${Object.keys(aliases).length} 条数据。`);
+    } catch (error) {
+        alert('同步失败，请检查网络或控制台日志。');
+        console.error(error);
+    } finally {
+        btn.textContent = originalText;
+        btn.disabled = false;
+    }
+});
\ No newline at end of file
diff --git a/scripts/generate-env.js b/scripts/generate-env.js
new file mode 100644
index 0000000..632b59f
--- /dev/null
+++ b/scripts/generate-env.js
@@ -0,0 +1,37 @@
+const fs = require('fs');
+const path = require('path');
+
+const envPath = path.join(__dirname, '..', '.env');
+const outputPath = path.join(__dirname, '..', 'env.js');
+
+try {
+    let envContent = '';
+    if (fs.existsSync(envPath)) {
+        envContent = fs.readFileSync(envPath, 'utf8');
+    }
+
+    const envVars = {};
+    envContent.split('\n').forEach(line => {
+        const match = line.match(/^\s*([\w_]+)\s*=\s*(.*)?\s*$/);
+        if (match) {
+            const key = match[1];
+            let value = match[2] || '';
+            // Remove quotes if present
+            if ((value.startsWith('"') && value.endsWith('"')) || (value.startsWith("'" ) && value.endsWith("'" ))) {
+                value = value.slice(1, -1);
+            }
+            envVars[key] = value;
+        }
+    });
+
+    const fileContent = `// Auto-generated by scripts/generate-env.js
+const ENV_SECRETS = ${JSON.stringify(envVars, null, 4)};
+`;
+
+    fs.writeFileSync(outputPath, fileContent);
+    console.log('Successfully generated env.js');
+
+} catch (err) {
+    console.error('Error generating env.js:', err);
+    process.exit(1);
+}
diff --git a/utils.js b/utils.js
new file mode 100644
index 0000000..0db9747
--- /dev/null
+++ b/utils.js
@@ -0,0 +1,71 @@
+const NOCODB_CONFIG = {
+    // Token and URL are loaded from env.js (ENV_SECRETS global variable)
+    TOKEN: (typeof ENV_SECRETS !== 'undefined' && ENV_SECRETS.NOCODB_TOKEN) ? ENV_SECRETS.NOCODB_TOKEN : "",
+    LIST_URL: (typeof ENV_SECRETS !== 'undefined' && ENV_SECRETS.NOCODB_LIST_URL) ? ENV_SECRETS.NOCODB_LIST_URL : ""
+};
+
+/**
+ * 从 NocoDB 获取所有别名记录并整理为键值对
+ * @returns {Promise<Object>} { "账号ID": "别名", ... }
+ */
+async function fetchAliasesFromDB() {
+    const listUrl = NOCODB_CONFIG.LIST_URL;
+    const headers = {
+        "xc-token": NOCODB_CONFIG.TOKEN,
+        "Content-Type": "application/json"
+    };
+
+    if (!listUrl || !NOCODB_CONFIG.TOKEN) {
+        console.error("Teams Alias: 缺少配置 (URL 或 Token)，请检查 .env 文件。");
+        throw new Error("Missing configuration");
+    }
+
+    let allAliases = {};
+    let offset = 0;
+    const limit = 1000;
+
+    try {
+        while (true) {
+            // 构建带参数的 URL
+            const url = new URL(listUrl);
+            url.searchParams.append("limit", limit);
+            url.searchParams.append("fields", "账号ID,_最终输出");
+            url.searchParams.append("offset", offset);
+
+            const response = await fetch(url.toString(), { headers });
+            
+            if (!response.ok) {
+                console.error(`获取数据失败: ${response.status} ${response.statusText}`);
+                throw new Error("网络请求失败");
+            }
+
+            const data = await response.json();
+            const rows = data.list || [];
+
+            if (rows.length === 0) {
+                break;
+            }
+
+            // 整理数据
+            rows.forEach(row => {
+                if (row["账号ID"] && row["_最终输出"]) {
+                    // key = 账号ID, value = _最终输出
+                    allAliases[row["账号ID"]] = row["_最终输出"];
+                }
+            });
+
+            if (rows.length < limit) {
+                break; // 已获取所有数据
+            }
+
+            offset += limit;
+        }
+
+        console.log(`同步完成，共获取 ${Object.keys(allAliases).length} 条别名记录。`);
+        return allAliases;
+
+    } catch (error) {
+        console.error("同步别名数据时出错:", error);
+        throw error; // 向抛出以便调用者处理
+    }
+}