diff --git a/assets/admin/src/pages/extensions/ExtensionSecurity.vue b/assets/admin/src/pages/extensions/ExtensionSecurity.vue
index 2b148ab5..8885a190 100644
--- a/assets/admin/src/pages/extensions/ExtensionSecurity.vue
+++ b/assets/admin/src/pages/extensions/ExtensionSecurity.vue
@@ -154,32 +154,38 @@ onMounted(async () => {
       const d = res.data
       const svc = res.services || {}
 
+      const captcha = d.captcha || svc.captcha || {}
+      const captchaOn = !!(captcha.enabled && captcha.configured)
+      const captchaScenes = captcha.scenes || {}
+      const audit = d.content_audit || svc.audit || {}
+      const ipGeo = d.ip_geo || svc.ip_geo || {}
+
       securityItems.value[0].value = d.email_gate_enabled ? '已开启' : '未开启'
       securityItems.value[0].color = d.email_gate_enabled ? '#52c41a' : '#8a909c'
-      securityItems.value[1].value = d.captcha_enabled ? '已开启' : '未开启'
-      securityItems.value[1].color = d.captcha_enabled ? '#52c41a' : '#8a909c'
+      securityItems.value[1].value = captchaOn ? '已开启' : '未开启'
+      securityItems.value[1].color = captchaOn ? '#52c41a' : '#8a909c'
 
-      if (svc.audit?.enabled) {
-        securityItems.value[2].value = svc.audit.configured ? '已配置' : '待补全'
-        securityItems.value[2].color = svc.audit.configured ? '#52c41a' : '#faad14'
+      if (audit.enabled) {
+        securityItems.value[2].value = audit.configured ? '已配置' : '待补全'
+        securityItems.value[2].color = audit.configured ? '#52c41a' : '#faad14'
       } else {
         securityItems.value[2].value = '未开启'
         securityItems.value[2].color = '#8a909c'
       }
 
-      if (svc.ip_geo?.enabled) {
-        securityItems.value[3].value = svc.ip_geo.configured ? '已配置' : '待补全'
-        securityItems.value[3].color = svc.ip_geo.configured ? '#52c41a' : '#faad14'
+      if (ipGeo.enabled) {
+        securityItems.value[3].value = ipGeo.configured ? '已配置' : '待补全'
+        securityItems.value[3].color = ipGeo.configured ? '#52c41a' : '#faad14'
       } else {
         securityItems.value[3].value = '未开启'
         securityItems.value[3].color = '#8a909c'
       }
 
       features.value[0].enabled = !!d.email_gate_enabled
-      features.value[1].enabled = !!d.captcha_comment_enabled
-      features.value[2].enabled = !!d.captcha_download_enabled
-      features.value[3].enabled = !!(svc.audit?.enabled ?? d.content_audit_enabled)
-      features.value[4].enabled = !!(svc.ip_geo?.enabled ?? d.ip_geo_enabled)
+      features.value[1].enabled = !!captchaScenes.comment
+      features.value[2].enabled = !!captcha.download_active
+      features.value[3].enabled = !!audit.enabled
+      features.value[4].enabled = !!ipGeo.enabled
 
       if (d.risk_switches) {
         riskSwitches.value = { ...riskSwitches.value, ...d.risk_switches }
diff --git a/assets/admin/src/pages/extensions/ExtensionTools.vue b/assets/admin/src/pages/extensions/ExtensionTools.vue
index 31e8515d..4d9d7598 100644
--- a/assets/admin/src/pages/extensions/ExtensionTools.vue
+++ b/assets/admin/src/pages/extensions/ExtensionTools.vue
@@ -136,8 +136,8 @@ onMounted(async () => {
       services.value[0].status = svc.sms?.provider || (s.sms_enabled ? '已启用' : '未配置')
       services.value[1].available = !!(svc.wechat?.available ?? s.wechat_enabled)
       services.value[1].status = svc.wechat?.provider || (s.wechat_enabled ? '已启用' : '未配置')
-      services.value[2].available = !!(svc.captcha?.available ?? s.captcha_enabled)
-      services.value[2].status = svc.captcha?.provider || (s.captcha_enabled ? '已启用' : '未配置')
+      services.value[2].available = !!(svc.captcha?.available ?? svc.captcha?.configured)
+      services.value[2].status = svc.captcha?.provider || (svc.captcha?.enabled ? '已启用' : '未配置')
       services.value[3].available = !!(svc.push?.available ?? s.baidu_push_enabled)
       services.value[3].status = svc.push?.provider || (s.baidu_push_enabled ? '已启用' : '未配置')
       services.value[4].available = !!(svc.audit?.available ?? s.content_audit_enabled)
diff --git a/assets/admin/src/schema/sections/permissions/index.js b/assets/admin/src/schema/sections/permissions/index.js
index 8574a748..df4b0b8f 100644
--- a/assets/admin/src/schema/sections/permissions/index.js
+++ b/assets/admin/src/schema/sections/permissions/index.js
@@ -64,6 +64,7 @@ export const permissionsSchemas = {
               { label: '用户登录', value: 'login' },
               { label: '用户注册', value: 'register' },
               { label: '绑定第三方', value: 'bind' },
+              { label: '绑定手机', value: 'bind_phone' },
               { label: '找回密码', value: 'lostpassword' },
               { label: '修改密码', value: 'change_password' },
               { label: '更改邮箱', value: 'change_email' },
diff --git a/assets/js/routes/user-center.js b/assets/js/routes/user-center.js
index 76cc7984..310ac0c6 100644
--- a/assets/js/routes/user-center.js
+++ b/assets/js/routes/user-center.js
@@ -443,7 +443,7 @@
 			m.classList.remove('is-open');
 			document.body.style.overflow = '';
 			var f = m.querySelector('form');
-			var sceneMap = { 'pwd-modal': 'change_password', 'email-modal': 'change_email' };
+			var sceneMap = { 'pwd-modal': 'change_password', 'email-modal': 'change_email', 'phone-modal': 'bind_phone' };
 			var scene = m.id && sceneMap[m.id] ? sceneMap[m.id] : '';
 			var store = window.AKSRTCaptchaState && window.AKSRTCaptchaState.scenes ? window.AKSRTCaptchaState.scenes : null;
 			if (f) {
@@ -687,4 +687,93 @@
 		initNotifications();
 		initSettings();
 	}
+
+	// 绑定手机
+	(function initBindPhone() {
+		var form = document.getElementById('aksrt-bind-phone-form');
+		if (!form) return;
+		form.addEventListener('submit', function (e) {
+			e.preventDefault();
+			var phoneEl = form.querySelector('[name="phone"]');
+			var codeEl = form.querySelector('[name="code"]');
+			var phone = phoneEl ? String(phoneEl.value || '').trim() : '';
+			var code = codeEl ? String(codeEl.value || '').trim() : '';
+			if (!/^1[3-9]\d{9}$/.test(phone)) {
+				showToast('请输入正确的手机号');
+				return;
+			}
+			if (!code) {
+				showToast('请输入短信验证码');
+				return;
+			}
+			var submitBtn = form.querySelector('[type="submit"]');
+			if (submitBtn) {
+				submitBtn.disabled = true;
+				submitBtn.textContent = '绑定中...';
+			}
+			function collectCaptcha(formEl) {
+				var out = {};
+				[
+					'captcha_verified', 'tencent_ticket', 'tencent_randstr', 'tencent_sid',
+					'cf_turnstile_response', 'geetest_lot_number', 'geetest_captcha_output',
+					'geetest_pass_token', 'geetest_gen_time', 'aliyun_captcha_verify_param'
+				].forEach(function (name) {
+					var el = formEl.querySelector('[name="' + name + '"]');
+					if (el && el.value) out[name] = el.value;
+				});
+				return out;
+			}
+			function resetCaptcha() {
+				try {
+					var store = window.AKSRTCaptchaState && window.AKSRTCaptchaState.scenes;
+					if (store && store.bind_phone && typeof store.bind_phone.reset === 'function') {
+						store.bind_phone.reset();
+					}
+				} catch (err) {}
+			}
+			function doBind() {
+				var captcha = collectCaptcha(form);
+				var restRoot = (window.aksrtData && aksrtData.apiUrl) || '/wp-json/aksrt/v1';
+				var nonce = (window.aksrtData && aksrtData.restNonce) || '';
+				fetch(String(restRoot).replace(/\/$/, '') + '/auth/bind-phone', {
+					method: 'POST',
+					credentials: 'same-origin',
+					headers: {
+						'Content-Type': 'application/json',
+						'X-WP-Nonce': nonce
+					},
+					body: JSON.stringify(Object.assign({ phone: phone, code: code }, captcha))
+				})
+					.then(function (r) { return r.json().then(function (j) { return { ok: r.ok, json: j }; }); })
+					.then(function (res) {
+						if (res.ok && res.json && res.json.success) {
+							showToast((res.json.message) || '绑定成功');
+							setTimeout(function () { window.location.reload(); }, 600);
+							return;
+						}
+						resetCaptcha();
+						showToast((res.json && (res.json.message || res.json.error)) || '绑定失败');
+						if (submitBtn) {
+							submitBtn.disabled = false;
+							submitBtn.textContent = '确认绑定';
+						}
+					})
+					.catch(function () {
+						resetCaptcha();
+						showToast('网络错误');
+						if (submitBtn) {
+							submitBtn.disabled = false;
+							submitBtn.textContent = '确认绑定';
+						}
+					});
+			}
+			var store = window.AKSRTCaptchaState && window.AKSRTCaptchaState.scenes;
+			if (store && store.bind_phone && typeof store.bind_phone.verify === 'function') {
+				store.bind_phone.verify(doBind);
+			} else {
+				doBind();
+			}
+		});
+	})();
+
 })();
diff --git a/inc/classes/admin/class-aksrt-admin-extension-controller.php b/inc/classes/admin/class-aksrt-admin-extension-controller.php
index e9142c53..84e5ba32 100644
--- a/inc/classes/admin/class-aksrt-admin-extension-controller.php
+++ b/inc/classes/admin/class-aksrt-admin-extension-controller.php
@@ -148,13 +148,6 @@ class AKSRT_Admin_Extension_Controller extends AKSRT_Admin_Controller_Base {
             $flat["{$key}_provider"]   = (string) ($svc['provider'] ?? '');
         }
 
-        // 保留旧布尔字段兼容
-        $flat['sms_enabled']           = !empty($services['sms']['enabled']);
-        $flat['wechat_enabled']        = !empty($services['wechat']['enabled']);
-        $flat['captcha_enabled']       = !empty($services['captcha']['enabled']);
-        $flat['baidu_push_enabled']    = !empty($services['push']['enabled']);
-        $flat['content_audit_enabled'] = !empty($services['audit']['enabled']);
-
         return $this->success([
             'data'     => $flat,
             'services' => $services,
@@ -173,12 +166,11 @@ class AKSRT_Admin_Extension_Controller extends AKSRT_Admin_Controller_Base {
             $email_gate_enabled = false;
         }
 
-        $captcha_summary = function_exists('aksrt_get_captcha_status_summary')
+        $captcha = function_exists('aksrt_get_captcha_status_summary')
             ? aksrt_get_captcha_status_summary()
-            : ['enabled' => false, 'configured' => false, 'scenes' => []];
-        $captcha_comment_enabled = !empty($captcha_summary['scenes']['comment']);
+            : ['enabled' => false, 'provider' => '', 'configured' => false, 'scenes' => []];
         $features = class_exists('AKSRT_Settings') ? AKSRT_Settings::get_cms_features() : [];
-        $captcha_download_enabled = !empty($features['download_captcha']) && !empty($captcha_summary['scenes']['download']);
+        $scenes = is_array($captcha['scenes'] ?? null) ? $captcha['scenes'] : [];
 
         $risk_switches = [
             'show_unapproved_comments' => !empty($settings['show_unapproved_comments']),
@@ -188,17 +180,25 @@ class AKSRT_Admin_Extension_Controller extends AKSRT_Admin_Controller_Base {
 
         return $this->success([
             'data' => [
-                'email_gate_enabled'        => $email_gate_enabled,
-                'captcha_comment_enabled'   => $captcha_comment_enabled,
-                'captcha_download_enabled'  => $captcha_download_enabled,
-                'content_audit_enabled'     => !empty($services['audit']['enabled']),
-                'content_audit_configured'  => !empty($services['audit']['configured']),
-                'ip_geo_enabled'            => !empty($services['ip_geo']['enabled']),
-                'ip_geo_configured'         => !empty($services['ip_geo']['configured']),
-                'captcha_enabled'           => !empty($captcha_summary['enabled']) && !empty($captcha_summary['configured']),
-                'captcha_summary'           => $captcha_summary,
-                'risk_switches'             => $risk_switches,
-                'services'                  => $services,
+                'email_gate_enabled' => $email_gate_enabled,
+                'captcha'            => [
+                    'enabled'           => !empty($captcha['enabled']),
+                    'provider'          => (string) ($captcha['provider'] ?? ''),
+                    'configured'        => !empty($captcha['configured']),
+                    'scenes'            => $scenes,
+                    'download_required' => !empty($features['download_captcha']),
+                    'download_active'   => !empty($features['download_captcha']) && !empty($scenes['download']),
+                ],
+                'content_audit'      => [
+                    'enabled'    => !empty($services['audit']['enabled']),
+                    'configured' => !empty($services['audit']['configured']),
+                ],
+                'ip_geo'             => [
+                    'enabled'    => !empty($services['ip_geo']['enabled']),
+                    'configured' => !empty($services['ip_geo']['configured']),
+                ],
+                'risk_switches'      => $risk_switches,
+                'services'           => $services,
             ],
         ]);
     }
diff --git a/inc/classes/admin/schema/class-aksrt-admin-schema-permissions.php b/inc/classes/admin/schema/class-aksrt-admin-schema-permissions.php
index e011cc20..eb254028 100644
--- a/inc/classes/admin/schema/class-aksrt-admin-schema-permissions.php
+++ b/inc/classes/admin/schema/class-aksrt-admin-schema-permissions.php
@@ -37,6 +37,7 @@ class AKSRT_Admin_Schema_Permissions {
                                 ['label' => '用户登录', 'value' => 'login'],
                                 ['label' => '用户注册', 'value' => 'register'],
                                 ['label' => '绑定第三方', 'value' => 'bind'],
+                                ['label' => '绑定手机', 'value' => 'bind_phone'],
                                 ['label' => '找回密码', 'value' => 'lostpassword'],
                                 ['label' => '修改密码', 'value' => 'change_password'],
                                 ['label' => '更改邮箱', 'value' => 'change_email'],
diff --git a/inc/classes/auth-traits/trait-aksrt-auth-service-part-1b.php b/inc/classes/auth-traits/trait-aksrt-auth-service-part-1b.php
index d8603e6f..04330d84 100644
--- a/inc/classes/auth-traits/trait-aksrt-auth-service-part-1b.php
+++ b/inc/classes/auth-traits/trait-aksrt-auth-service-part-1b.php
@@ -425,6 +425,13 @@ trait AKSRT_Auth_Service_Part_1b {
 			return ['success' => false, 'error' => __('手机号格式不正确', 'aksrt')];
 		}
 
+		if (function_exists('aksrt_require_captcha')) {
+			$captcha_result = aksrt_require_captcha('bind_phone', $post);
+			if ($captcha_result !== true) {
+				return ['success' => false, 'error' => $captcha_result];
+			}
+		}
+
 		// 验证 SMS 验证码
 		if (class_exists('AKSRT_SMS')) {
 			$verify_result = AKSRT_SMS::get_instance()->verify_code($phone, $code);
diff --git a/inc/classes/class-aksrt-captcha.php b/inc/classes/class-aksrt-captcha.php
index a3636287..2303f9d7 100644
--- a/inc/classes/class-aksrt-captcha.php
+++ b/inc/classes/class-aksrt-captcha.php
@@ -32,6 +32,7 @@ function aksrt_captcha_scenes(): array {
 		'login'            => __('用户登录', 'aksrt'),
 		'register'         => __('用户注册', 'aksrt'),
 		'bind'             => __('绑定第三方', 'aksrt'),
+		'bind_phone'       => __('绑定手机', 'aksrt'),
 		'lostpassword'     => __('找回密码', 'aksrt'),
 		'change_password'  => __('修改密码', 'aksrt'),
 		'change_email'     => __('更改邮箱', 'aksrt'),
@@ -621,7 +622,22 @@ var triggerCaptcha=function(){ showTip('验证码加载中，请稍候', '#e67e2
 function findForm(){
 	form=box.closest('form');
 	if(!form&&C.scene==='comment') form=document.getElementById('commentform');
-	if(!form&&C.scene==='login')   form=document.getElementById('aksrt-login-form')||document.querySelector('.auth-form');
+	if(!form&&(C.scene==='login'||C.scene==='register')){
+		form=document.getElementById('aksrt-login-form')
+			||document.getElementById('aksrt-modal-login-form')
+			||document.getElementById('sign-login-form')
+			||document.getElementById('aksrt-phone-login-form')
+			||document.getElementById('aksrt-modal-register-form')
+			||document.getElementById('sign-register-form')
+			||document.getElementById('aksrt-phone-register-form')
+			||document.querySelector('.auth-form')
+			||document.querySelector('.sign-form');
+	}
+	if(!form&&C.scene==='bind_phone'){
+		form=document.getElementById('aksrt-bind-phone-form')
+			||document.querySelector('[data-aksrt-bind-phone-form]')
+			||document.querySelector('.auth-form');
+	}
 	return form;
 }
 
diff --git a/inc/classes/scripts-traits/trait-aksrt-scripts-part-1b.php b/inc/classes/scripts-traits/trait-aksrt-scripts-part-1b.php
index 6dfd2728..f5286d9d 100644
--- a/inc/classes/scripts-traits/trait-aksrt-scripts-part-1b.php
+++ b/inc/classes/scripts-traits/trait-aksrt-scripts-part-1b.php
@@ -266,6 +266,17 @@ trait AKSRT_Scripts_Part_1b {
                     $version,
                     true
                 );
+                // 绑定手机短信发送按钮依赖 sign-register 的 data-aksrt-sms-trigger 契约
+                $sign_register_js = get_template_directory() . '/assets/js/sign-register.js';
+                if (file_exists($sign_register_js)) {
+                    wp_enqueue_script(
+                        'aksrt-sign-register',
+                        $base_uri . '/assets/js/sign-register.js',
+                        ['aksrt-route-user-center'],
+                        (string) filemtime($sign_register_js),
+                        true
+                    );
+                }
             }
         }
 
diff --git a/inc/helpers/user-center-renderers/profile-account-modals.php b/inc/helpers/user-center-renderers/profile-account-modals.php
index 029c8304..443527ff 100644
--- a/inc/helpers/user-center-renderers/profile-account-modals.php
+++ b/inc/helpers/user-center-renderers/profile-account-modals.php
@@ -96,3 +96,32 @@ extract($context, EXTR_SKIP); // phpcs:ignore WordPress.PHP.DontExtract.extract_
 				</form>
 			</div>
 		</div>
+
+<div id="phone-modal" class="aksrt-modal" hidden>
+	<div class="aksrt-modal__dialog" role="dialog" aria-modal="true" aria-labelledby="phone-modal-title">
+		<div class="aksrt-modal__header">
+			<h3 id="phone-modal-title"><?php esc_html_e('绑定手机', 'aksrt'); ?></h3>
+			<button type="button" class="aksrt-modal__close" data-modal-close="phone-modal" aria-label="<?php esc_attr_e('关闭', 'aksrt'); ?>">&times;</button>
+		</div>
+		<form id="aksrt-bind-phone-form" class="aksrt-modal__body" data-aksrt-bind-phone-form>
+			<div class="form-field">
+				<label for="bind-phone-input"><?php esc_html_e('手机号', 'aksrt'); ?></label>
+				<input type="tel" id="bind-phone-input" name="phone" data-aksrt-phone-input maxlength="11" autocomplete="tel" required placeholder="<?php esc_attr_e('请输入手机号', 'aksrt'); ?>">
+			</div>
+			<div class="form-field form-field--code">
+				<label for="bind-phone-code"><?php esc_html_e('短信验证码', 'aksrt'); ?></label>
+				<div class="input-wrap input-wrap--code">
+					<input type="text" id="bind-phone-code" name="code" maxlength="8" autocomplete="one-time-code" required placeholder="<?php esc_attr_e('请输入验证码', 'aksrt'); ?>">
+					<button type="button" class="btn-secondary btn-sm" data-aksrt-sms-trigger data-aksrt-sms-scene="bind_phone" data-aksrt-sms-phone="#bind-phone-input"><?php esc_html_e('获取验证码', 'aksrt'); ?></button>
+				</div>
+			</div>
+			<?php if (function_exists('aksrt_render_captcha')) : ?>
+				<?php aksrt_render_captcha('bind_phone'); ?>
+			<?php endif; ?>
+			<div class="aksrt-modal__actions">
+				<button type="submit" class="btn-primary"><?php esc_html_e('确认绑定', 'aksrt'); ?></button>
+			</div>
+		</form>
+	</div>
+</div>
+
diff --git a/inc/helpers/user-center-renderers/settings-security.php b/inc/helpers/user-center-renderers/settings-security.php
index 21609bb6..ed481d44 100644
--- a/inc/helpers/user-center-renderers/settings-security.php
+++ b/inc/helpers/user-center-renderers/settings-security.php
@@ -36,6 +36,18 @@ defined('ABSPATH') || exit;
 			<button type="button" class="btn-primary btn-sm security-trigger" data-modal="email-modal">
 				<?php esc_html_e('更改', 'aksrt'); ?>
 			</button>
+			<div class="security-action-item">
+				<div class="security-action-info">
+					<span class="security-action-icon"><i class="fas fa-mobile-alt" aria-hidden="true"></i></span>
+					<div class="security-action-text">
+						<span class="security-action-title"><?php esc_html_e('绑定手机', 'aksrt'); ?></span>
+						<span class="security-action-desc"><?php esc_html_e('绑定手机号后可使用短信验证码登录', 'aksrt'); ?></span>
+					</div>
+				</div>
+				<button type="button" class="btn-primary btn-sm security-trigger" data-modal="phone-modal">
+					<?php esc_html_e('绑定', 'aksrt'); ?>
+				</button>
+			</div>
 		</div>
 	</div>
 </div>