diff --git a/api/tenant/v1/auth.go b/api/tenant/v1/auth.go
index ee1bd98..122ad3a 100644
--- a/api/tenant/v1/auth.go
+++ b/api/tenant/v1/auth.go
@@ -4,15 +4,16 @@ import "github.com/gogf/gf/v2/frame/g"
 
 // TenantRegisterReq 租户注册请求
 type TenantRegisterReq struct {
-	g.Meta     `path:"/auth/register" method:"post" mime:"json" tags:"租户控制台-认证" summary:"租户注册" group:"public" middleware:"-"`
-	Email      string `json:"email" v:"required|email#请输入邮箱|邮箱格式不正确" dc:"邮箱"`
-	Code       string `json:"code" dc:"邮箱验证码（邮箱验证开启时必填）"`
-	Password   string `json:"password" v:"required|length:8,64#请输入密码|密码长度为8-64位" dc:"密码"`
-	TenantName string `json:"tenant_name" v:"required|length:2,100#请输入组织名称|组织名称长度为2-100位" dc:"组织名称"`
-	TenantCode string `json:"tenant_code" v:"required|length:3,30|regex:^[a-z0-9][a-z0-9-]*[a-z0-9]$#请输入组织代码|组织代码为3-30位小写字母数字|组织代码格式不正确" dc:"组织代码"`
-	Username   string `json:"username" v:"required|length:3,50#请输入用户名|用户名长度为3-50位" dc:"用户名"`
-	CaptchaKey string `json:"captcha_key" dc:"滑块验证码key（邮箱验证关闭时必填）"`
-	CaptchaX   int    `json:"captcha_x" dc:"滑块X坐标（邮箱验证关闭时必填）"`
+	g.Meta         `path:"/auth/register" method:"post" mime:"json" tags:"租户控制台-认证" summary:"租户注册" group:"public" middleware:"-"`
+	Email          string `json:"email" v:"required|email#请输入邮箱|邮箱格式不正确" dc:"邮箱"`
+	Code           string `json:"code" dc:"邮箱验证码（邮箱验证开启时必填）"`
+	Password       string `json:"password" v:"required|length:8,64#请输入密码|密码长度为8-64位" dc:"密码"`
+	TenantName     string `json:"tenant_name" v:"required|length:2,100#请输入组织名称|组织名称长度为2-100位" dc:"组织名称"`
+	TenantCode     string `json:"tenant_code" v:"required|length:3,30|regex:^[a-z0-9][a-z0-9-]*[a-z0-9]$#请输入组织代码|组织代码为3-30位小写字母数字|组织代码格式不正确" dc:"组织代码"`
+	Username       string `json:"username" v:"required|length:3,50#请输入用户名|用户名长度为3-50位" dc:"用户名"`
+	CaptchaKey     string `json:"captcha_key" dc:"滑块验证码key（Turnstile关闭时必填）"`
+	CaptchaX       int    `json:"captcha_x" dc:"滑块X坐标（Turnstile关闭时必填）"`
+	TurnstileToken string `json:"turnstile_token" dc:"Cloudflare Turnstile验证token（Turnstile启用时必填）"`
 }
 
 type TenantRegisterRes struct {
@@ -33,12 +34,13 @@ type TenantRegisterRes struct {
 
 // TenantLoginReq 租户登录请求
 type TenantLoginReq struct {
-	g.Meta     `path:"/auth/login" method:"post" mime:"json" tags:"租户控制台-认证" summary:"租户登录" group:"public" middleware:"-"`
-	Account    string `json:"account" v:"required#请输入账号" dc:"账号（username@tenant_code 或邮箱）"`
-	Password   string `json:"password" v:"required#请输入密码" dc:"密码"`
-	Type       string `json:"type" v:"required|in:ram,admin#请选择登录方式|登录方式无效" dc:"登录方式：ram（RAM账号）/ admin（管理员邮箱）"`
-	CaptchaKey string `json:"captcha_key" dc:"验证码key（验证码启用时必填）"`
-	CaptchaX   int    `json:"captcha_x" dc:"滑块X坐标（验证码启用时必填）"`
+	g.Meta         `path:"/auth/login" method:"post" mime:"json" tags:"租户控制台-认证" summary:"租户登录" group:"public" middleware:"-"`
+	Account        string `json:"account" v:"required#请输入账号" dc:"账号（username@tenant_code 或邮箱）"`
+	Password       string `json:"password" v:"required#请输入密码" dc:"密码"`
+	Type           string `json:"type" v:"required|in:ram,admin#请选择登录方式|登录方式无效" dc:"登录方式：ram（RAM账号）/ admin（管理员邮箱）"`
+	CaptchaKey     string `json:"captcha_key" dc:"验证码key（Turnstile关闭时必填）"`
+	CaptchaX       int    `json:"captcha_x" dc:"滑块X坐标（Turnstile关闭时必填）"`
+	TurnstileToken string `json:"turnstile_token" dc:"Cloudflare Turnstile验证token（Turnstile启用时必填）"`
 }
 
 type TenantLoginRes struct {
diff --git a/internal/logic/common/captcha.go b/internal/logic/common/captcha.go
index 5eca1f1..6084b5d 100644
--- a/internal/logic/common/captcha.go
+++ b/internal/logic/common/captcha.go
@@ -15,6 +15,7 @@ import (
 	"github.com/wenlng/go-captcha/v2/slide"
 
 	"github.com/qianfree/team-api/internal/consts"
+	"github.com/qianfree/team-api/internal/utility/turnstile"
 )
 
 const (
@@ -211,3 +212,46 @@ func getCaptchaExpireSeconds(ctx context.Context) time.Duration {
 	}
 	return time.Duration(secs) * time.Second
 }
+
+// CheckTurnstileRequired checks Cloudflare Turnstile verification when enabled.
+// If Turnstile is disabled, passes through (allows fallback to captcha).
+func CheckTurnstileRequired(ctx context.Context, token string) error {
+	// Check if Turnstile is enabled
+	enabled := Config().GetBool(ctx, "turnstile_enabled")
+	if !enabled {
+		// Turnstile not enabled, allow pass-through to captcha
+		return nil
+	}
+
+	// Turnstile is enabled, token is required
+	if token == "" {
+		return NewBusinessError(consts.CodeCaptchaRequired, consts.MsgCaptchaRequired)
+	}
+
+	// Verify token with Cloudflare
+	secretKey := Config().GetString(ctx, "turnstile_secret_key")
+	if secretKey == "" {
+		g.Log().Errorf(ctx, "[Turnstile] secret_key not configured")
+		return NewBusinessError(consts.CodeInternalServerError, "验证服务配置错误")
+	}
+
+	// Get client IP for verification
+	ipAddress := ""
+	if r := g.RequestFromCtx(ctx); r != nil {
+		ipAddress = r.GetClientIp()
+	}
+
+	result, err := turnstile.Verify(ctx, secretKey, token, ipAddress)
+	if err != nil {
+		g.Log().Errorf(ctx, "[Turnstile] verification failed: %v", err)
+		return NewBusinessError(consts.CodeCaptchaFailed, "人机验证失败")
+	}
+
+	if !result.Success {
+		g.Log().Warningf(ctx, "[Turnstile] verification failed: error codes=%v", result.ErrorCodes)
+		return NewBusinessError(consts.CodeCaptchaFailed, "人机验证失败")
+	}
+
+	// Verification successful
+	return nil
+}
diff --git a/internal/logic/tenant/auth.go b/internal/logic/tenant/auth.go
index 7b5f957..4c4b99a 100644
--- a/internal/logic/tenant/auth.go
+++ b/internal/logic/tenant/auth.go
@@ -58,7 +58,12 @@ func (s *sTenant) Register(ctx context.Context, req *v1.TenantRegisterReq) (*v1.
 			return nil, err
 		}
 	} else {
-		// 滑块验证模式
+		// 人机验证：优先 Turnstile，否则滑块验证
+		if err := common.CheckTurnstileRequired(ctx, req.TurnstileToken); err != nil {
+			return nil, err
+		}
+
+		// Turnstile 未启用时，使用滑块验证
 		if err := common.CheckCaptchaRequired(ctx, "tenant_register", req.CaptchaKey, req.CaptchaX); err != nil {
 			return nil, err
 		}
@@ -188,6 +193,10 @@ func (s *sTenant) Login(ctx context.Context, req *v1.TenantLoginReq) (*v1.Tenant
 	account := strings.TrimSpace(req.Account)
 
 	// Check captcha if required
+	if err := common.CheckTurnstileRequired(ctx, req.TurnstileToken); err != nil {
+		return nil, err
+	}
+
 	if err := common.CheckCaptchaRequired(ctx, "tenant_login", req.CaptchaKey, req.CaptchaX); err != nil {
 		return nil, err
 	}
diff --git a/web/tenant/src/components/common/Turnstile.vue b/web/tenant/src/components/common/Turnstile.vue
new file mode 100644
index 0000000..d9cceb9
--- /dev/null
+++ b/web/tenant/src/components/common/Turnstile.vue
@@ -0,0 +1,154 @@
+<script setup lang="ts">
+import { ref, onMounted, onUnmounted, watch } from 'vue'
+
+interface Props {
+	modelValue?: string
+	siteKey?: string
+	theme?: 'light' | 'dark' | 'auto'
+	size?: 'normal' | 'compact'
+	tabindex?: number
+}
+
+const props = withDefaults(defineProps<Props>(), {
+	modelValue: '',
+	siteKey: '',
+	theme: 'auto',
+	size: 'normal',
+	tabindex: 0,
+})
+
+const emit = defineEmits<{
+	(e: 'update:modelValue', value: string): void
+	(e: 'verified', token: string): void
+	(e: 'error', error: any): void
+}>()
+
+const containerId = `turnstile-container-${Math.random().toString(36).substr(2, 9)}`
+const isLoaded = ref(false)
+const isVerifying = ref(false)
+const turnstileScriptId = 'turnstile-script'
+let widgetId: string | null = null
+
+// Load Cloudflare Turnstile script
+function loadTurnstileScript(): Promise<void> {
+	return new Promise((resolve, reject) => {
+		if (window.turnstile) {
+			isLoaded.value = true
+			resolve()
+			return
+		}
+
+		const script = document.createElement('script')
+		script.id = turnstileScriptId
+		script.src = 'https://challenges.cloudflare.com/turnstile/v0/api.js'
+		script.async = true
+		script.defer = true
+		script.onload = () => {
+			isLoaded.value = true
+			resolve()
+		}
+		script.onerror = () => {
+			reject(new Error('Failed to load Turnstile script'))
+		}
+		document.head.appendChild(script)
+	})
+}
+
+// Render Turnstile widget
+function renderWidget() {
+	if (!window.turnstile || !props.siteKey) return
+
+	const container = document.getElementById(containerId)
+	if (!container) return
+
+	// Clear existing widget
+	if (widgetId !== null) {
+		window.turnstile.remove(widgetId)
+	}
+
+	// Render new widget
+	widgetId = window.turnstile.render(container, {
+		sitekey: props.siteKey,
+		theme: props.theme,
+		size: props.size,
+		tabindex: props.tabindex,
+		callback: (token: string) => {
+			isVerifying.value = false
+			emit('update:modelValue', token)
+			emit('verified', token)
+		},
+		'error-callback': (error: any) => {
+			isVerifying.value = false
+			emit('error', error)
+		},
+		'expired-callback': () => {
+			widgetId = null
+			emit('update:modelValue', '')
+		},
+	})
+}
+
+// Reset widget
+function reset() {
+	if (widgetId !== null && window.turnstile) {
+		window.turnstile.reset(widgetId)
+		emit('update:modelValue', '')
+	}
+}
+
+// Expose reset method
+defineExpose({
+	reset,
+})
+
+onMounted(async () => {
+	try {
+		await loadTurnstileScript()
+		renderWidget()
+	} catch (error) {
+		console.error('Failed to initialize Turnstile:', error)
+		emit('error', error)
+	}
+})
+
+onUnmounted(() => {
+	if (widgetId !== null && window.turnstile) {
+		window.turnstile.remove(widgetId)
+	}
+})
+
+// Watch for siteKey changes
+watch(() => props.siteKey, () => {
+	if (isLoaded.value) {
+		renderWidget()
+	}
+})
+
+// Watch for modelValue changes from parent
+watch(() => props.modelValue, (newValue) => {
+	if (!newValue && widgetId !== null && window.turnstile) {
+		window.turnstile.reset(widgetId)
+	}
+})
+</script>
+
+<template>
+	<div
+		:id="containerId"
+		class="turnstile-widget"
+		:class="{ 'turnstile-loading': isVerifying }"
+	/>
+</template>
+
+<style scoped>
+.turnstile-widget {
+	min-height: 65px;
+	display: flex;
+	align-items: center;
+	justify-content: center;
+}
+
+.turnstile-loading {
+	opacity: 0.6;
+}
+</style>
diff --git a/web/tenant/src/composables/usePublicSettings.ts b/web/tenant/src/composables/usePublicSettings.ts
index 04441e7..908bd35 100644
--- a/web/tenant/src/composables/usePublicSettings.ts
+++ b/web/tenant/src/composables/usePublicSettings.ts
@@ -24,6 +24,8 @@ const settings = ref<PublicSettings>({
 	site_description: '',
 	demo_mode: false,
 	demo_message: '',
+	turnstile_enabled: false,
+	turnstile_site_key: '',
 })
 
 let fetchPromise: Promise<void> | null = null
diff --git a/web/tenant/src/views/auth/LoginPage.vue b/web/tenant/src/views/auth/LoginPage.vue
index 4ebcf9b..05de066 100644
--- a/web/tenant/src/views/auth/LoginPage.vue
+++ b/web/tenant/src/views/auth/LoginPage.vue
@@ -8,6 +8,7 @@ import request from '@/utils/request'
 import AuthLayout from '@/components/layout/AuthLayout.vue'
 import Icon from '@/components/common/Icon.vue'
 import SlideCaptcha from '@/components/common/SlideCaptcha.vue'
+import Turnstile from '@/components/common/Turnstile.vue
 
 const router = useRouter()
 const route = useRoute()
@@ -35,6 +36,7 @@ const totpLoading = ref(false)
 
 // Captcha state — always required
 const captcha = reactive({ captchaKey: '', captchaX: 0 })
+	const turnstileToken = ref('')
 const captchaRef = ref<InstanceType<typeof SlideCaptcha> | null>(null)
 
 const emailInput = ref<HTMLInputElement | null>(null)
diff --git a/web/tenant/src/views/auth/RegisterPage.vue b/web/tenant/src/views/auth/RegisterPage.vue
index 24468c8..7c44ab4 100644
--- a/web/tenant/src/views/auth/RegisterPage.vue
+++ b/web/tenant/src/views/auth/RegisterPage.vue
@@ -5,6 +5,7 @@ import { useTenantAuthStore } from '@/stores/tenant-auth'
 import { usePublicSettings } from '@/composables/usePublicSettings'
 import AuthLayout from '@/components/layout/AuthLayout.vue'
 import SlideCaptcha from '@/components/common/SlideCaptcha.vue'
+import Turnstile from '@/components/common/Turnstile.vue
 import Icon from '@/components/common/Icon.vue'
 import request from '@/utils/request'
 import { extractApiError } from '@/utils/request'
@@ -19,6 +20,7 @@ const codeSending = ref(false)
 const countdown = ref(0)
 const emailVerification = ref(true)
 const captcha = ref<{ captchaKey: string; captchaX: number }>({ captchaKey: '', captchaX: 0 })
+	const turnstileToken = ref('')
 let countdownTimer: ReturnType<typeof setInterval> | null = null
 
 const orgForm = reactive({ orgName: '', orgCode: '' })