diff --git a/frontend/app/[locale]/settings/blacklist/page.tsx b/frontend/app/[locale]/settings/blacklist/page.tsx
new file mode 100644
index 00000000..4cce5665
--- /dev/null
+++ b/frontend/app/[locale]/settings/blacklist/page.tsx
@@ -0,0 +1,132 @@
+"use client"
+
+import React, { useState, useEffect } from "react"
+import { useTranslations } from "next-intl"
+import { AlertTriangle, Loader2, Ban } from "lucide-react"
+import { Button } from "@/components/ui/button"
+import { Textarea } from "@/components/ui/textarea"
+import { Skeleton } from "@/components/ui/skeleton"
+import { Card, CardContent, CardDescription, CardHeader, CardTitle } from "@/components/ui/card"
+import { useGlobalBlacklist, useUpdateGlobalBlacklist } from "@/hooks/use-global-blacklist"
+
+/**
+ * Global blacklist settings page
+ */
+export default function GlobalBlacklistPage() {
+  const t = useTranslations("pages.settings.blacklist")
+  
+  const [blacklistText, setBlacklistText] = useState("")
+  const [hasChanges, setHasChanges] = useState(false)
+
+  const { data, isLoading, error } = useGlobalBlacklist()
+  const updateBlacklist = useUpdateGlobalBlacklist()
+
+  // Initialize text when data loads
+  useEffect(() => {
+    if (data?.patterns) {
+      setBlacklistText(data.patterns.join("\n"))
+      setHasChanges(false)
+    }
+  }, [data])
+
+  // Handle text change
+  const handleTextChange = (e: React.ChangeEvent<HTMLTextAreaElement>) => {
+    setBlacklistText(e.target.value)
+    setHasChanges(true)
+  }
+
+  // Handle save
+  const handleSave = () => {
+    const patterns = blacklistText
+      .split("\n")
+      .map((line) => line.trim())
+      .filter((line) => line.length > 0)
+
+    updateBlacklist.mutate(
+      { patterns },
+      {
+        onSuccess: () => {
+          setHasChanges(false)
+        },
+      }
+    )
+  }
+
+  if (isLoading) {
+    return (
+      <div className="flex flex-1 flex-col gap-4 p-4">
+        <div className="space-y-2">
+          <Skeleton className="h-8 w-48" />
+          <Skeleton className="h-4 w-96" />
+        </div>
+        <Skeleton className="h-[400px] w-full" />
+      </div>
+    )
+  }
+
+  if (error) {
+    return (
+      <div className="flex flex-1 flex-col items-center justify-center py-12">
+        <AlertTriangle className="h-10 w-10 text-destructive mb-4" />
+        <p className="text-muted-foreground">{t("loadError")}</p>
+      </div>
+    )
+  }
+
+  return (
+    <div className="flex flex-1 flex-col gap-4 p-4">
+      {/* Page header */}
+      <div>
+        <h1 className="text-2xl font-bold">{t("title")}</h1>
+        <p className="text-muted-foreground">{t("description")}</p>
+      </div>
+
+      {/* Blacklist card */}
+      <Card>
+        <CardHeader>
+          <div className="flex items-center gap-2">
+            <Ban className="h-5 w-5 text-muted-foreground" />
+            <CardTitle>{t("card.title")}</CardTitle>
+          </div>
+          <CardDescription>{t("card.description")}</CardDescription>
+        </CardHeader>
+        <CardContent className="space-y-4">
+          {/* Rules hint */}
+          <div className="flex flex-wrap items-center gap-x-4 gap-y-2 text-sm text-muted-foreground">
+            <span className="font-medium text-foreground">{t("rules.title")}:</span>
+            <span><code className="bg-muted px-1.5 py-0.5 rounded text-xs">*.gov</code> {t("rules.domain")}</span>
+            <span><code className="bg-muted px-1.5 py-0.5 rounded text-xs">*cdn*</code> {t("rules.keyword")}</span>
+            <span><code className="bg-muted px-1.5 py-0.5 rounded text-xs">192.168.1.1</code> {t("rules.ip")}</span>
+            <span><code className="bg-muted px-1.5 py-0.5 rounded text-xs">10.0.0.0/8</code> {t("rules.cidr")}</span>
+          </div>
+
+          {/* Scope hint */}
+          <div className="rounded-lg border bg-muted/50 p-3 text-sm">
+            <p className="text-muted-foreground">{t("scopeHint")}</p>
+          </div>
+
+          {/* Input */}
+          <Textarea
+            value={blacklistText}
+            onChange={handleTextChange}
+            placeholder={t("placeholder")}
+            className="min-h-[320px] font-mono text-sm"
+          />
+
+          {/* Save button */}
+          <div className="flex justify-end">
+            <Button
+              onClick={handleSave}
+              disabled={!hasChanges || updateBlacklist.isPending}
+            >
+              {updateBlacklist.isPending && (
+                <Loader2 className="mr-2 h-4 w-4 animate-spin" />
+              )}
+              {t("save")}
+            </Button>
+          </div>
+        </CardContent>
+      </Card>
+    </div>
+  )
+}
diff --git a/frontend/components/app-sidebar.tsx b/frontend/components/app-sidebar.tsx
index e3bcc562..942b444e 100644
--- a/frontend/components/app-sidebar.tsx
+++ b/frontend/components/app-sidebar.tsx
@@ -18,6 +18,7 @@ import {
   IconMessageReport, // Feedback icon
   IconSearch, // Search icon
   IconKey, // API Key icon
+  IconBan, // Blacklist icon
 } from "@tabler/icons-react"
 // Import internationalization hook
 import { useTranslations } from 'next-intl'
@@ -174,6 +175,11 @@ export function AppSidebar({ ...props }: React.ComponentProps<typeof Sidebar>) {
       url: "/settings/api-keys/",
       icon: IconKey,
     },
+    {
+      name: t('globalBlacklist'),
+      url: "/settings/blacklist/",
+      icon: IconBan,
+    },
   ]
 
   return (
diff --git a/frontend/hooks/use-global-blacklist.ts b/frontend/hooks/use-global-blacklist.ts
new file mode 100644
index 00000000..65774600
--- /dev/null
+++ b/frontend/hooks/use-global-blacklist.ts
@@ -0,0 +1,40 @@
+import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query'
+import { toast } from 'sonner'
+import { useTranslations } from 'next-intl'
+import {
+  getGlobalBlacklist,
+  updateGlobalBlacklist,
+  type GlobalBlacklistResponse,
+  type UpdateGlobalBlacklistRequest,
+} from '@/services/global-blacklist.service'
+
+const QUERY_KEY = ['global-blacklist']
+
+/**
+ * Hook to fetch global blacklist
+ */
+export function useGlobalBlacklist() {
+  return useQuery<GlobalBlacklistResponse>({
+    queryKey: QUERY_KEY,
+    queryFn: getGlobalBlacklist,
+  })
+}
+
+/**
+ * Hook to update global blacklist
+ */
+export function useUpdateGlobalBlacklist() {
+  const queryClient = useQueryClient()
+  const t = useTranslations('pages.settings.blacklist')
+
+  return useMutation({
+    mutationFn: (data: UpdateGlobalBlacklistRequest) => updateGlobalBlacklist(data),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: QUERY_KEY })
+      toast.success(t('toast.saveSuccess'))
+    },
+    onError: () => {
+      toast.error(t('toast.saveError'))
+    },
+  })
+}
diff --git a/frontend/messages/en.json b/frontend/messages/en.json
index a26ac8f6..1c599a64 100644
--- a/frontend/messages/en.json
+++ b/frontend/messages/en.json
@@ -320,6 +320,7 @@
     "systemLogs": "System Logs",
     "notifications": "Notifications",
     "apiKeys": "API Keys",
+    "globalBlacklist": "Global Blacklist",
     "help": "Get Help",
     "feedback": "Feedback"
   },
@@ -2053,7 +2054,7 @@
             "cidr": "Matches IP range",
             "cidrShort": "CIDR"
           },
-          "placeholder": "Enter rules, one per line",
+          "placeholder": "Enter rules, one per line\n\nExamples:\n*.gov\n*.edu\n*cdn*\n192.168.0.0/16\n10.0.0.1",
           "save": "Save Rules"
         },
         "scheduledScans": {
@@ -2137,6 +2138,31 @@
     "nav": {
       "scanEngine": "Scan Engine",
       "wordlists": "Wordlist Management"
+    },
+    "settings": {
+      "blacklist": {
+        "title": "Global Blacklist",
+        "description": "Configure global blacklist rules. Matching assets will be automatically excluded during scans.",
+        "loadError": "Failed to load blacklist rules",
+        "card": {
+          "title": "Blacklist Rules",
+          "description": "These rules apply to all target scans. To configure blacklist for a specific target, go to the target settings page."
+        },
+        "rules": {
+          "title": "Supported rule types",
+          "domain": "Domain",
+          "keyword": "Keyword",
+          "ip": "IP",
+          "cidr": "CIDR"
+        },
+        "scopeHint": "Global rules apply to all targets. Target-level rules can be configured in Target → Settings.",
+        "placeholder": "Enter rules, one per line\n\nExamples:\n*.gov\n*.edu\n*cdn*\n192.168.0.0/16\n10.0.0.1",
+        "save": "Save Rules",
+        "toast": {
+          "saveSuccess": "Blacklist rules saved",
+          "saveError": "Failed to save blacklist rules"
+        }
+      }
     }
   },
   "metadata": {
diff --git a/frontend/messages/zh.json b/frontend/messages/zh.json
index 935be5a1..f1d70b7d 100644
--- a/frontend/messages/zh.json
+++ b/frontend/messages/zh.json
@@ -320,6 +320,7 @@
     "systemLogs": "系统日志",
     "notifications": "通知设置",
     "apiKeys": "API 密钥",
+    "globalBlacklist": "全局黑名单",
     "help": "获取帮助",
     "feedback": "反馈建议"
   },
@@ -2053,7 +2054,7 @@
             "cidr": "匹配 IP 网段范围",
             "cidrShort": "CIDR"
           },
-          "placeholder": "输入规则，每行一个",
+          "placeholder": "输入规则，每行一个\n\n示例：\n*.gov\n*.edu\n*cdn*\n192.168.0.0/16\n10.0.0.1",
           "save": "保存规则"
         },
         "scheduledScans": {
@@ -2137,6 +2138,31 @@
     "nav": {
       "scanEngine": "扫描引擎",
       "wordlists": "字典管理"
+    },
+    "settings": {
+      "blacklist": {
+        "title": "全局黑名单",
+        "description": "配置全局黑名单规则，扫描时将自动排除匹配的资产",
+        "loadError": "加载黑名单规则失败",
+        "card": {
+          "title": "黑名单规则",
+          "description": "这些规则将应用于所有目标的扫描任务。如需为特定目标配置黑名单，请前往目标设置页面。"
+        },
+        "rules": {
+          "title": "支持的规则类型",
+          "domain": "域名",
+          "keyword": "关键词",
+          "ip": "IP",
+          "cidr": "CIDR"
+        },
+        "scopeHint": "全局规则对所有目标生效。目标级规则可在「目标 → 设置」中单独配置。",
+        "placeholder": "输入规则，每行一个\n\n示例：\n*.gov\n*.edu\n*cdn*\n192.168.0.0/16\n10.0.0.1",
+        "save": "保存规则",
+        "toast": {
+          "saveSuccess": "黑名单规则已保存",
+          "saveError": "保存黑名单规则失败"
+        }
+      }
     }
   },
   "metadata": {
diff --git a/frontend/services/global-blacklist.service.ts b/frontend/services/global-blacklist.service.ts
new file mode 100644
index 00000000..bbef0948
--- /dev/null
+++ b/frontend/services/global-blacklist.service.ts
@@ -0,0 +1,25 @@
+import { api } from '@/lib/api-client'
+
+export interface GlobalBlacklistResponse {
+  patterns: string[]
+}
+
+export interface UpdateGlobalBlacklistRequest {
+  patterns: string[]
+}
+
+/**
+ * Get global blacklist rules
+ */
+export async function getGlobalBlacklist(): Promise<GlobalBlacklistResponse> {
+  const res = await api.get<GlobalBlacklistResponse>('/blacklist/rules/')
+  return res.data
+}
+
+/**
+ * Update global blacklist rules (full replace)
+ */
+export async function updateGlobalBlacklist(data: UpdateGlobalBlacklistRequest): Promise<GlobalBlacklistResponse> {
+  const res = await api.put<GlobalBlacklistResponse>('/blacklist/rules/', data)
+  return res.data
+}