diff --git a/static/index.html b/static/index.html
index 984587c..6e0b3db 100644
--- a/static/index.html
+++ b/static/index.html
@@ -55,6 +55,14 @@
                     <i class="bi bi-credit-card"></i>
                     <span>Claude检测</span>
                 </button>
+                <select class="filter-select" id="paymentFilter" title="支付状态筛选">
+                    <option value="">全部状态</option>
+                    <option value="paid">已支付</option>
+                    <option value="unpaid">未支付</option>
+                    <option value="refunded">已退款</option>
+                    <option value="suspended">已封号</option>
+                    <option value="unchecked">未检测</option>
+                </select>
                 <button class="btn btn-icon" id="refreshAccountsBtn" title="刷新">
                     <i class="bi bi-arrow-clockwise"></i>
                 </button>
diff --git a/static/script.js b/static/script.js
index 01e0d36..4ff870b 100644
--- a/static/script.js
+++ b/static/script.js
@@ -50,6 +50,7 @@ class MailManager {
         this.messages = [];
         this.selectedId = null;
         this.claudePaymentStatuses = {};
+        this.paymentFilter = '';
 
         this.init();
     }
@@ -104,6 +105,13 @@ class MailManager {
         // Claude支付检测
         document.getElementById('claudePaymentBtn').addEventListener('click', () => this.startClaudePaymentCheck());
 
+        // 支付状态筛选
+        document.getElementById('paymentFilter').addEventListener('change', (e) => {
+            this.paymentFilter = e.target.value;
+            this.page = 1;
+            this.loadAccounts();
+        });
+
         // 刷新
         document.getElementById('refreshAccountsBtn').addEventListener('click', () => this.loadAccounts());
 
@@ -242,22 +250,22 @@ class MailManager {
         tbody.innerHTML = `<tr><td colspan="13"><div class="table-loading"><div class="spinner-border spinner-border-sm"></div> 加载中...</div></td></tr>`;
 
         try {
-            const params = new URLSearchParams({
-                page: this.page,
-                page_size: this.pageSize
-            });
+            // 有筛选时加载全部数据，否则分页加载
+            const params = new URLSearchParams(
+                this.paymentFilter
+                    ? { page: 1, page_size: 9999 }
+                    : { page: this.page, page_size: this.pageSize }
+            );
             if (this.query) params.set('q', this.query);
 
             const resp = await fetch(`/api/accounts/detailed?${params}`);
             const result = await resp.json();
 
             if (result.success && result.data) {
-                this.accounts = result.data.items || [];
-                this.total = result.data.total || 0;
-                this.page = result.data.page || 1;
+                this._allAccounts = result.data.items || [];
+                this._allTotal = result.data.total || 0;
                 await this.loadClaudePaymentStatuses();
-                this.renderAccounts();
-                this.renderPager();
+                this.applyFilterAndRender();
             } else {
                 tbody.innerHTML = `<tr><td colspan="13"><div class="no-data"><i class="bi bi-exclamation-circle"></i><div>${this.escapeHtml(result.message || '加载失败')}</div></div></td></tr>`;
             }
@@ -267,6 +275,32 @@ class MailManager {
         }
     }
 
+    _matchPaymentFilter(email) {
+        const info = this.claudePaymentStatuses[email];
+        switch (this.paymentFilter) {
+            case 'paid':       return info && !!info.payment_time;
+            case 'unpaid':     return !info || !info.payment_time;
+            case 'refunded':   return info && !!info.refund_time;
+            case 'suspended':  return info && !!info.suspended_time;
+            case 'unchecked':  return !info;
+            default:           return true;
+        }
+    }
+
+    applyFilterAndRender() {
+        if (this.paymentFilter) {
+            const filtered = this._allAccounts.filter(acc => this._matchPaymentFilter(acc.email));
+            this.total = filtered.length;
+            const start = (this.page - 1) * this.pageSize;
+            this.accounts = filtered.slice(start, start + this.pageSize);
+        } else {
+            this.accounts = this._allAccounts;
+            this.total = this._allTotal;
+        }
+        this.renderAccounts();
+        this.renderPager();
+    }
+
     renderAccounts() {
         const tbody = document.getElementById('accountTableBody');
         if (!this.accounts.length) {
diff --git a/static/style.css b/static/style.css
index 8b8e181..24baabf 100644
--- a/static/style.css
+++ b/static/style.css
@@ -219,6 +219,27 @@ body {
     height: 38px;
 }
 
+/* 筛选下拉 */
+.filter-select {
+    height: 38px;
+    padding: 0 12px;
+    border: 2px solid #e5e7eb;
+    border-radius: 8px;
+    font-size: 13px;
+    font-weight: 600;
+    color: #475569;
+    background: rgba(255, 255, 255, 0.8);
+    outline: none;
+    cursor: pointer;
+    transition: all 0.3s ease;
+    flex-shrink: 0;
+}
+
+.filter-select:focus {
+    border-color: #667eea;
+    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
+}
+
 .search-box input::placeholder { color: #9ca3af; }
 .search-box input:focus {
     border-color: #667eea;