diff --git a/cwd-comments-admin/src/api/admin.ts b/cwd-comments-admin/src/api/admin.ts
index f8c74de..26dc39d 100644
--- a/cwd-comments-admin/src/api/admin.ts
+++ b/cwd-comments-admin/src/api/admin.ts
@@ -43,6 +43,7 @@ export type CommentSettingsResponse = {
 	adminKey?: string | null;
 	adminKeySet?: boolean;
 	requireReview?: boolean;
+	blockedIps?: string[];
 };
 
 export type EmailNotifySettingsResponse = {
@@ -137,10 +138,15 @@ export function saveCommentSettings(data: {
 	allowedDomains?: string[];
 	adminKey?: string;
 	requireReview?: boolean;
+	blockedIps?: string[];
 }): Promise<{ message: string }> {
 	return put<{ message: string }>('/admin/settings/comments', data);
 }
 
+export function blockIp(ip: string): Promise<{ message: string }> {
+	return post<{ message: string }>('/admin/comments/block-ip', { ip });
+}
+
 export function exportComments(): Promise<any[]> {
 	return get<any[]>('/admin/comments/export');
 }
diff --git a/cwd-comments-admin/src/views/CommentsView.vue b/cwd-comments-admin/src/views/CommentsView.vue
index d4bded2..b5792a1 100644
--- a/cwd-comments-admin/src/views/CommentsView.vue
+++ b/cwd-comments-admin/src/views/CommentsView.vue
@@ -38,6 +38,9 @@
                 <div class="cell-author-name">{{ item.name }}</div>
                 <div class="cell-author-email">{{ item.email }}</div>
                 <span class="cell-time">{{ formatDate(item.created) }}</span>
+                <div v-if="item.ipAddress" class="cell-author-ip">
+                  <span class="cell-ip-text" @click="handleBlockIp(item)" title="屏蔽该 IP">{{ item.ipAddress }}</span>
+                </div>
               </div>
             </div>
           </div>
@@ -176,6 +179,7 @@ import {
   fetchComments,
   deleteComment,
   updateCommentStatus,
+  blockIp,
 } from "../api/admin";
 
 const comments = ref<CommentItem[]>([]);
@@ -292,6 +296,21 @@ async function removeComment(item: CommentItem) {
   }
 }
 
+async function handleBlockIp(item: CommentItem) {
+  if (!item.ipAddress) {
+    return;
+  }
+  if (!window.confirm(`确认将 IP ${item.ipAddress} 加入黑名单吗？`)) {
+    return;
+  }
+  try {
+    const res = await blockIp(item.ipAddress);
+    window.alert(res.message || "已加入 IP 黑名单");
+  } catch (e: any) {
+    error.value = e.message || "屏蔽 IP 失败";
+  }
+}
+
 onMounted(() => {
   loadComments();
 });
@@ -621,4 +640,12 @@ onMounted(() => {
   border: 1px solid #d0d7de;
   font-size: 12px;
 }
+
+.cell-ip-text {
+  cursor: pointer;
+}
+
+.cell-ip-text:hover {
+  text-decoration: underline;
+}
 </style>
diff --git a/cwd-comments-admin/src/views/SettingsView.vue b/cwd-comments-admin/src/views/SettingsView.vue
index f0668c0..1a01f1b 100644
--- a/cwd-comments-admin/src/views/SettingsView.vue
+++ b/cwd-comments-admin/src/views/SettingsView.vue
@@ -48,6 +48,15 @@
             placeholder="例如: example.com, test.com"
           ></textarea>
         </div>
+      <div class="form-item">
+        <label class="form-label">IP 黑名单（多个 IP 用逗号或换行分隔，留空则不限制）</label>
+        <textarea
+          v-model="blockedIps"
+          class="form-input"
+          rows="3"
+          placeholder="例如: 1.1.1.1, 2.2.2.2"
+        ></textarea>
+      </div>
         <div class="form-item">
           <label class="form-label">管理员评论密钥</label>
           <div class="form-hint" style="margin-bottom: 4px;">
@@ -305,6 +314,7 @@ const commentAdminBadge = ref("");
 const avatarPrefix = ref("");
 const commentAdminEnabled = ref(false);
 const allowedDomains = ref("");
+const blockedIps = ref("");
 const commentAdminKey = ref("");
 const adminKeySet = ref(false);
 const requireReview = ref(false);
@@ -365,6 +375,9 @@ async function load() {
     allowedDomains.value = commentRes.allowedDomains
       ? commentRes.allowedDomains.join(", ")
       : "";
+    blockedIps.value = commentRes.blockedIps
+      ? commentRes.blockedIps.join(", ")
+      : "";
     commentAdminKey.value = commentRes.adminKey || "";
     adminKeySet.value = !!commentRes.adminKeySet;
     requireReview.value = !!commentRes.requireReview;
@@ -498,6 +511,10 @@ async function saveComment() {
         .filter(Boolean),
       adminKey: commentAdminKey.value || undefined,
       requireReview: requireReview.value,
+      blockedIps: blockedIps.value
+        .split(/[,，\n]/)
+        .map((d) => d.trim())
+        .filter(Boolean),
     });
 
     showToast(res.message || "保存成功", "success");
diff --git a/cwd-comments-api/src/api/public/postComment.ts b/cwd-comments-api/src/api/public/postComment.ts
index 916f5e3..82b5a8b 100644
--- a/cwd-comments-api/src/api/public/postComment.ts
+++ b/cwd-comments-api/src/api/public/postComment.ts
@@ -52,6 +52,17 @@ export const postComment = async (c: Context<{ Bindings: Bindings }>) => {
     .first<string>('value');
   const requireReview = requireReviewRaw === '1';
 
+  const blockedIpsRow = await c.env.CWD_DB.prepare('SELECT value FROM Settings WHERE key = ?')
+    .bind('comment_blocked_ips')
+    .first<{ value: string }>();
+  const blockedIpsValue = blockedIpsRow?.value || '';
+  const blockedIps = blockedIpsValue
+    ? blockedIpsValue.split(',').map((d) => d.trim()).filter(Boolean)
+    : [];
+  if (blockedIps.length && blockedIps.includes(ip)) {
+    return c.json({ message: '当前 IP 已被限制评论，请联系站长进行处理' }, 403);
+  }
+
   let isAdminComment = false;
 
   if (adminEmail && email === adminEmail) {
@@ -63,7 +74,7 @@ export const postComment = async (c: Context<{ Bindings: Bindings }>) => {
       const lockKey = `admin_lock:${ip}`;
       const isLocked = await c.env.CWD_AUTH_KV.get(lockKey);
       if (isLocked) {
-        return c.json({ message: "验证失败次数过多，请30分钟后再试" }, 403);
+        return c.json({ message: "验证失败次数过多，请 30 分钟后再试" }, 403);
       }
 
       if (!adminToken) {
@@ -79,7 +90,7 @@ export const postComment = async (c: Context<{ Bindings: Bindings }>) => {
         if (fails >= 3) {
           await c.env.CWD_AUTH_KV.put(lockKey, '1', { expirationTtl: 1800 });
           await c.env.CWD_AUTH_KV.delete(failKey);
-          return c.json({ message: "验证失败次数过多，请30分钟后再试" }, 403);
+          return c.json({ message: "验证失败次数过多，请 30 分钟后再试" }, 403);
         } else {
           await c.env.CWD_AUTH_KV.put(failKey, fails.toString(), { expirationTtl: 3600 });
           return c.json({ message: "密钥错误" }, 401);
diff --git a/cwd-comments-api/src/index.ts b/cwd-comments-api/src/index.ts
index 5fe24af..7216a0e 100644
--- a/cwd-comments-api/src/index.ts
+++ b/cwd-comments-api/src/index.ts
@@ -32,6 +32,7 @@ const COMMENT_ADMIN_ENABLED_KEY = 'comment_admin_enabled';
 const COMMENT_ALLOWED_DOMAINS_KEY = 'comment_allowed_domains';
 const COMMENT_ADMIN_KEY_HASH_KEY = 'comment_admin_key_hash';
 const COMMENT_REQUIRE_REVIEW_KEY = 'comment_require_review';
+const COMMENT_BLOCKED_IPS_KEY = 'comment_blocked_ips';
 
 
 async function loadCommentSettings(env: Bindings) {
@@ -45,10 +46,11 @@ async function loadCommentSettings(env: Bindings) {
 		COMMENT_ADMIN_ENABLED_KEY,
 		COMMENT_ALLOWED_DOMAINS_KEY,
 		COMMENT_ADMIN_KEY_HASH_KEY,
-		COMMENT_REQUIRE_REVIEW_KEY
+		COMMENT_REQUIRE_REVIEW_KEY,
+		COMMENT_BLOCKED_IPS_KEY
 	];
 	const { results } = await env.CWD_DB.prepare(
-		'SELECT key, value FROM Settings WHERE key IN (?, ?, ?, ?, ?, ?, ?)'
+		'SELECT key, value FROM Settings WHERE key IN (?, ?, ?, ?, ?, ?, ?, ?)'
 	)
 		.bind(...keys)
 		.all<{ key: string; value: string }>();
@@ -66,6 +68,11 @@ async function loadCommentSettings(env: Bindings) {
 	const requireReviewRaw = map.get(COMMENT_REQUIRE_REVIEW_KEY) ?? null;
 	const requireReview = requireReviewRaw === '1';
 
+	const blockedIpsRaw = map.get(COMMENT_BLOCKED_IPS_KEY) ?? '';
+	const blockedIps = blockedIpsRaw
+		? blockedIpsRaw.split(',').map((d) => d.trim()).filter(Boolean)
+		: [];
+
 	// 解析允许的域名列表
 	const allowedDomainsRaw = map.get(COMMENT_ALLOWED_DOMAINS_KEY) ?? '';
 	const allowedDomains = allowedDomainsRaw
@@ -79,6 +86,7 @@ async function loadCommentSettings(env: Bindings) {
 		adminEnabled,
 		allowedDomains,
 		requireReview,
+		blockedIps,
 		adminKey: map.get(COMMENT_ADMIN_KEY_HASH_KEY) ?? null,
 		adminKeySet: !!map.get(COMMENT_ADMIN_KEY_HASH_KEY)
 	};
@@ -94,6 +102,7 @@ async function saveCommentSettings(
 		allowedDomains?: string[];
 		adminKey?: string;
 		requireReview?: boolean;
+		blockedIps?: string[];
 	}
 ) {
 	await env.CWD_DB.prepare(
@@ -134,6 +143,10 @@ async function saveCommentSettings(
 						? '1'
 						: '0'
 					: undefined
+		},
+		{
+			key: COMMENT_BLOCKED_IPS_KEY,
+			value: settings.blockedIps ? settings.blockedIps.join(',') : undefined
 		}
 	];
 
@@ -192,6 +205,7 @@ app.get('/api/config/comments', async (c) => {
 		const {
 			adminKey,
 			adminKeySet,
+			blockedIps,
 			...publicSettings
 		} = settings as any;
 
@@ -257,6 +271,7 @@ app.put('/admin/settings/comments', async (c) => {
 		const rawAllowedDomains = Array.isArray(body.allowedDomains) ? body.allowedDomains : [];
 		const rawAdminKey = typeof body.adminKey === 'string' ? body.adminKey : undefined;
 		const rawRequireReview = body.requireReview;
+		const rawBlockedIps = Array.isArray(body.blockedIps) ? body.blockedIps : [];
 
 		const adminEmail = rawAdminEmail.trim();
 		const adminBadge = rawAdminBadge.trim();
@@ -273,6 +288,9 @@ app.put('/admin/settings/comments', async (c) => {
 			typeof rawRequireReview === 'boolean'
 				? rawRequireReview
 				: rawRequireReview === '1' || rawRequireReview === 1;
+		const blockedIps = rawBlockedIps
+			.map((d: any) => (typeof d === 'string' ? d.trim() : ''))
+			.filter(Boolean);
 
 		if (adminEmail && !isValidEmail(adminEmail)) {
 			return c.json({ message: '邮箱格式不正确' }, 400);
@@ -285,7 +303,8 @@ app.put('/admin/settings/comments', async (c) => {
 			adminEnabled,
 			allowedDomains,
 			adminKey,
-			requireReview
+			requireReview,
+			blockedIps
 		});
 
 		return c.json({ message: '保存成功' });
@@ -294,4 +313,43 @@ app.put('/admin/settings/comments', async (c) => {
 	}
 });
 
+app.post('/admin/comments/block-ip', async (c) => {
+	try {
+		const body = await c.req.json();
+		const rawIp = typeof body.ip === 'string' ? body.ip : '';
+		const ip = rawIp.trim();
+
+		if (!ip) {
+			return c.json({ message: 'IP 地址不能为空' }, 400);
+		}
+
+		await c.env.CWD_DB.prepare(
+			'CREATE TABLE IF NOT EXISTS Settings (key TEXT PRIMARY KEY, value TEXT NOT NULL)'
+		).run();
+
+		const row = await c.env.CWD_DB.prepare('SELECT value FROM Settings WHERE key = ?')
+			.bind(COMMENT_BLOCKED_IPS_KEY)
+			.first<{ value: string }>();
+
+		const existing = row?.value || '';
+		const list = existing
+			? existing.split(',').map((d) => d.trim()).filter(Boolean)
+			: [];
+
+		if (!list.includes(ip)) {
+			list.push(ip);
+			const joined = list.join(',');
+			await c.env.CWD_DB.prepare(
+				'REPLACE INTO Settings (key, value) VALUES (?, ?)'
+			)
+				.bind(COMMENT_BLOCKED_IPS_KEY, joined)
+				.run();
+		}
+
+		return c.json({ message: '已加入 IP 黑名单' });
+	} catch (e: any) {
+		return c.json({ message: e.message || '操作失败' }, 500);
+	}
+});
+
 export default app;