diff --git a/web/app/controllers/problem.php b/web/app/controllers/problem.php
index 9d1c355..52895ff 100644
--- a/web/app/controllers/problem.php
+++ b/web/app/controllers/problem.php
@@ -323,12 +323,12 @@ if (UOJContest::cur()) {
 					</div>
 					<div class="tab-pane" id="submit">
 						<?php if ($pre_submit_check_ret !== true) : ?>
-							<p class="text-warning h4"><?= $pre_submit_check_ret ?></p>
+							<p class="text-warning-emphasis h4"><?= $pre_submit_check_ret ?></p>
 						<?php elseif ($no_more_submission) : ?>
-							<p class="text-warning h4"><?= $no_more_submission ?></p>
+							<p class="text-warning-emphasis h4"><?= $no_more_submission ?></p>
 						<?php else : ?>
 							<?php if ($submission_warning) : ?>
-								<p class="text-warning h4"><?= $submission_warning ?></p>
+								<p class="text-warning-emphasis h4"><?= $submission_warning ?></p>
 							<?php endif ?>
 							<?php if (isset($zip_answer_form)) : ?>
 								<?php $zip_answer_form->printHTML(); ?>
diff --git a/web/app/controllers/subdomain/blog/blog.php b/web/app/controllers/subdomain/blog/blog.php
index f6079e3..0cd54c6 100644
--- a/web/app/controllers/subdomain/blog/blog.php
+++ b/web/app/controllers/subdomain/blog/blog.php
@@ -13,6 +13,8 @@ $blog = UOJBlog::info();
 function getCommentContentToDisplay($comment) {
 	if (!$comment['is_hidden']) {
 		return $comment['content'];
+	} else if (UOJUserBlog::userHasManagePermission(Auth::user())) {
+		return '<span class="text-muted mb-3">【' . HTML::escape($comment['reason_to_hide']) . '】</span>' . $comment['content'];
 	} else {
 		return '<span class="text-muted">【' . HTML::escape($comment['reason_to_hide']) . '】</span>';
 	}
@@ -162,6 +164,34 @@ $reply_form->handle = function (&$vdata) {
 $reply_form->config['ctrl_enter_submit'] = true;
 $reply_form->runAtServer();
 
+if (UOJUserBlog::userHasManagePermission(Auth::user())) {
+	$hide_form = new UOJForm('hide');
+	$hide_form->addHidden('comment_hide_id', '', 'validateCommentId', null);
+	$hide_form->addSelect('comment_hide_type', [
+		'label' => '隐藏理由',
+		'options' => UOJBlogComment::HIDE_REASONS,
+		'default_value' => 'spam',
+	]);
+	$hide_form->addInput('comment_hide_reason', [
+		'div_class' => 'mt-3',
+		'label' => '自定义隐藏理由',
+		'default_value' => '该评论由于违反社区规定，已被管理员隐藏',
+		'validator_php' => 'validateString',
+	]);
+	$hide_form->handle = function (&$vdata) {
+		if ($_POST['comment_hide_type'] == 'unhide') {
+			$reason = '';
+		} else if ($_POST['comment_hide_type'] == 'other') {
+			$reason = $_POST['comment_hide_reason'];
+		} else {
+			$reason = '该评论由于' . UOJBlogComment::HIDE_REASONS[$_POST['comment_hide_type']] . '，已被管理员隐藏';
+		}
+
+		$vdata['comment_hide_id']->hide($reason);
+	};
+	$hide_form->runAtServer();
+}
+
 $comments_pag = new Paginator([
 	'col_names' => ['*'],
 	'table_name' => 'blogs_comments',
@@ -170,9 +200,38 @@ $comments_pag = new Paginator([
 	'page_len' => 20
 ]);
 ?>
+
 <?php echoUOJPageHeader(HTML::stripTags($blog['title']) . ' - 博客') ?>
+
+<script>
+	var user_can_hide_comment = <?= json_encode(isset($hide_form)) ?>;
+</script>
+
 <?php UOJBlog::cur()->echoView(['show_title_only' => isset($_GET['page']) && $_GET['page'] != 1]) ?>
 
+<?php if (isset($hide_form)) : ?>
+	<div class="modal fade" id="HideCommentModal" tabindex="-1" aria-labelledby="HideCommentModalLabel" aria-hidden="true">
+		<div class="modal-dialog">
+			<div class="modal-content">
+				<div class="modal-header">
+					<h1 class="modal-title fs-5" id="HideCommentModalLabel">隐藏评论</h1>
+					<button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
+				</div>
+				<div class="modal-body">
+					<div class="mb-3">
+						<div class="mb-2">原评论（ID: <span id="span-comment_hide_id"></span>）：</div>
+						<blockquote id="HideCommentModalOriginalComment" class="border-start border-3 ps-3 text-muted"></blockquote>
+					</div>
+
+					<hr>
+
+					<?php $hide_form->printHTML(); ?>
+				</div>
+			</div>
+		</div>
+	</div>
+<?php endif ?>
+
 <h2>
 	评论
 	<i class="bi bi-chat-fill"></i>
@@ -216,13 +275,20 @@ $comments_pag = new Paginator([
 								<?= ClickZans::getBlock('BC', $comment['id'], $comment['zan']) ?>
 							</div>
 						</div>
-						<div class="comment-content my-2"><?= $comment['content'] ?></div>
+						<div class="comment-content my-2" id="comment-content-<?= $comment['id'] ?>"><?= getCommentContentToDisplay($comment) ?></div>
 						<ul class="list-inline mb-0 text-end">
 							<li class="list-inline-item small text-muted">
 								<?= $comment['post_time'] ?>
 							</li>
+							<?php if (isset($hide_form)) : ?>
+								<li class="list-inline-item">
+									<a href="#" class="text-warning-emphasis text-decoration-none p-0 uoj-blog-hide-comment-btn" data-comment-id="<?= $comment['id'] ?>">
+										隐藏
+									</a>
+								</li>
+							<?php endif ?>
 							<li class="list-inline-item">
-								<a class="text-decoration-none" id="reply-to-<?= $comment['id'] ?>" href="#">
+								<a id="reply-to-<?= $comment['id'] ?>" href="#">
 									回复
 								</a>
 							</li>
@@ -249,4 +315,14 @@ $comments_pag = new Paginator([
 	<?php $reply_form->printHTML() ?>
 </div>
 
+<script>
+	$('.uoj-blog-hide-comment-btn').each(function() {
+		$(this).click(function() {
+			var comment_id = $(this).data('comment-id');
+
+			toggleModalHideComment(comment_id, $('#comment-content-' + comment_id).html());
+		});
+	})
+</script>
+
 <?php echoUOJPageFooter() ?>
diff --git a/web/app/libs/uoj-validate-lib.php b/web/app/libs/uoj-validate-lib.php
index 0d17760..d83ab17 100644
--- a/web/app/libs/uoj-validate-lib.php
+++ b/web/app/libs/uoj-validate-lib.php
@@ -75,8 +75,8 @@ function validateURL($url) {
 	return filter_var($url, FILTER_VALIDATE_URL) !== false;
 }
 
-function validateString($str) {
-	return preg_match('/[^0-9a-zA-Z]/', $str) !== true;
+function validateString($x) {
+	return is_string($x) ? '' : '不合法的字符串';
 }
 
 function validateGitHubUsername($username) {
@@ -95,6 +95,20 @@ function validateUserAndStoreByUsername($username, &$vdata) {
 	return '';
 }
 
+function validateCommentId($id) {
+	if (!validateUInt($id)) {
+		return 'ID 不合法';
+	}
+
+	$comment = UOJBlogComment::query($id);
+
+	if (!$comment) {
+		return '评论不存在';
+	}
+
+	return ['error' => '', 'store' => $comment];
+}
+
 function is_short_string($str) {
 	return is_string($str) && strlen($str) <= 256;
 }
diff --git a/web/app/models/UOJBlogComment.php b/web/app/models/UOJBlogComment.php
index d7caebc..dca19a5 100644
--- a/web/app/models/UOJBlogComment.php
+++ b/web/app/models/UOJBlogComment.php
@@ -3,13 +3,22 @@
 class UOJBlogComment {
 	use UOJDataTrait;
 
+	const HIDE_REASONS = [
+		'unhide' => '解除隐藏',
+		'spam' => '疑似为垃圾信息',
+		'garbage' => '疑似为无意义的乱码',
+		'insult' => '包含不和谐内容',
+		'violate' => '违反法律法规',
+		'other' => '其他（请在下方说明）',
+	];
+
 	public static function query($id) {
 		if (!isset($id) || !validateUInt($id)) {
 			return null;
 		}
 		$info = DB::selectFirst([
 			"select * from blogs_comments",
-		    "where", ['id' => $id]
+			"where", ['id' => $id]
 		]);
 		if (!$info) {
 			return null;
@@ -23,12 +32,12 @@ class UOJBlogComment {
 
 	public function hide($reason) {
 		DB::update([
-		    "update blogs_comments",
-		    "set", [
-		        'is_hidden' => ($reason !== ''),
-		        'reason_to_hide' => $reason
-		    ],
-		    "where", ['id' => $this->info['id']]
+			"update blogs_comments",
+			"set", [
+				'is_hidden' => ($reason !== ''),
+				'reason_to_hide' => $reason
+			],
+			"where", ['id' => $this->info['id']]
 		]);
 
 		$blog = UOJBlog::query($this->info['blog_id']);
diff --git a/web/app/models/UOJUserBlog.php b/web/app/models/UOJUserBlog.php
index 96db7bf..902d4ff 100644
--- a/web/app/models/UOJUserBlog.php
+++ b/web/app/models/UOJUserBlog.php
@@ -33,6 +33,14 @@ class UOJUserBlog {
 		return self::$user['username'] === $user['username'];
 	}
 
+	public static function userHasManagePermission(?array $user) {
+		if ($user === null) {
+			return false;
+		}
+
+		return isSuperUser($user) || UOJUser::checkPermission($user, 'blogs.manage');
+	}
+
 	public static function userCanManage(?array $user, ?string $whose_blog = null) {
 		if ($whose_blog === null) {
 			$whose_blog = self::id();
diff --git a/web/js/uoj.js b/web/js/uoj.js
index bcdead1..aeb6a77 100644
--- a/web/js/uoj.js
+++ b/web/js/uoj.js
@@ -1577,6 +1577,14 @@ function custom_test_onsubmit(response_text, div_result, url) {
 	setTimeout(update, 500);
 }
 
+// hide comment
+function toggleModalHideComment(id, content) {
+	$('#input-comment_hide_id').val(id);
+	$('#span-comment_hide_id').text(id);
+	$('#HideCommentModalOriginalComment').html(content);
+	$('#HideCommentModal').modal('show');
+}
+
 // comment
 function showCommentReplies(id, replies) {
 	var toggleFormReply = function(from, text) {
@@ -1596,7 +1604,6 @@ function showCommentReplies(id, replies) {
 					$(r).val(text).focus();
 				});
 			});
-
 		} else if ($(q).css('display') != 'none') {
 			$(q).appendTo(p).hide('fast');
 		} else {
@@ -1629,6 +1636,14 @@ function showCommentReplies(id, replies) {
 				).append(
 					$('<ul class="text-end mb-0 list-inline" />').append(
 						'<li class="list-inline-item small text-muted">' + reply.post_time + '</li>'
+					).append(
+						user_can_hide_comment
+							? $('<li class="list-inline-item" />').append(
+								$('<a href="#" class="text-warning-emphasis text-decoration-none p-0" />').data('comment-id', reply.id).text('隐藏').click(function() {
+									toggleModalHideComment(reply.id, reply.content);
+								})
+							)
+							: ''
 					).append(
 						$('<li class="list-inline-item" />').append(
 							$('<a href="#">回复</a>').click(function (e) {