diff --git a/web/app/controllers/problem.php b/web/app/controllers/problem.php
index 0da9869..788e1e1 100644
--- a/web/app/controllers/problem.php
+++ b/web/app/controllers/problem.php
@@ -522,15 +522,6 @@ $('#contest-countdown').countdown(<?= $contest['end_time']->getTimestamp() - UOJ
 </aside>
 
 </div>
-
-<!-- 表格处理 -->
-<script>
-	$(document).ready(function() {
-		$('.markdown-body table').each(function() {
-			$(this).addClass('table table-bordered');
-		});
-	});
-</script>
 <?php endif ?>
 
 <?php if ($contest && $contest['cur_progress'] <= CONTEST_IN_PROGRESS): ?>
diff --git a/web/app/controllers/problem_managers_manage.php b/web/app/controllers/problem_managers_manage.php
index 1134fba..99bf811 100644
--- a/web/app/controllers/problem_managers_manage.php
+++ b/web/app/controllers/problem_managers_manage.php
@@ -192,14 +192,6 @@ table-hover
 </aside>
 
 </div>
-
-<script>
-	$(document).ready(function() {
-		$('.markdown-body table').each(function() {
-			$(this).addClass('table table-bordered');
-		});
-	});
-</script>
 <?php endif ?>
 
 <?php echoUOJPageFooter() ?>
diff --git a/web/app/controllers/problem_solutions.php b/web/app/controllers/problem_solutions.php
index 929d32e..1eeaebc 100644
--- a/web/app/controllers/problem_solutions.php
+++ b/web/app/controllers/problem_solutions.php
@@ -298,12 +298,4 @@ EOD;
 
 </div>
 
-<script>
-	$(document).ready(function() {
-		$('.markdown-body table').each(function() {
-			$(this).addClass('table table-bordered');
-		});
-	});
-</script>
-
 <?php echoUOJPageFooter() ?>
diff --git a/web/app/controllers/problem_statement_manage.php b/web/app/controllers/problem_statement_manage.php
index bd90e34..54d825a 100644
--- a/web/app/controllers/problem_statement_manage.php
+++ b/web/app/controllers/problem_statement_manage.php
@@ -168,14 +168,6 @@
 </aside>
 
 </div>
-
-<script>
-	$(document).ready(function() {
-		$('.markdown-body table').each(function() {
-			$(this).addClass('table table-bordered');
-		});
-	});
-</script>
 <?php endif ?>
 
 <?php echoUOJPageFooter() ?>
diff --git a/web/app/controllers/problem_statistics.php b/web/app/controllers/problem_statistics.php
index bd1819b..f1b5331 100644
--- a/web/app/controllers/problem_statistics.php
+++ b/web/app/controllers/problem_statistics.php
@@ -369,15 +369,6 @@ $('#contest-countdown').countdown(<?= $contest['end_time']->getTimestamp() - UOJ
 </aside>
 
 </div>
-
-
-<script>
-	$(document).ready(function() {
-		$('.markdown-body table').each(function() {
-			$(this).addClass('table table-bordered');
-		});
-	});
-</script>
 <?php endif ?>
 
 <?php if ($contest && $contest['cur_progress'] <= CONTEST_IN_PROGRESS): ?>
diff --git a/web/app/models/UOJBlogEditor.php b/web/app/models/UOJBlogEditor.php
index 04d10fa..c807a67 100644
--- a/web/app/models/UOJBlogEditor.php
+++ b/web/app/models/UOJBlogEditor.php
@@ -114,7 +114,14 @@ class UOJBlogEditor {
 		if ($this->show_editor) {
 			if ($this->type == 'blog') {
 				$content_md = $_POST[$this->name . '_content_md'];
-				$this->post_data['content'] = $parsedown->text($this->post_data['content_md']);
+				$dom = new DOMDocument;
+				$dom->loadHTML(mb_convert_encoding($parsedown->text($this->post_data['content_md']), 'HTML-ENTITIES', 'UTF-8'));
+				$elements = $dom->getElementsByTagName('table');
+				foreach ($elements as $element) {
+					$element->setAttribute('class',
+						$element->getAttribute('class') . ' table table-bordered');
+				}
+				$this->post_data['content'] = $purifier->purify($dom->saveHTML());
 
 				if (preg_match('/^.*<!--.*readmore.*-->.*$/m', $this->post_data['content'], $matches, PREG_OFFSET_CAPTURE)) {
 					$content_less = substr($this->post_data['content'], 0, $matches[0][1]);
@@ -203,18 +210,6 @@ class UOJBlogEditor {
 				echo '<article class="markdown-body">';
 				echo $this->post_data['content'];
 				echo '</article>';
-
-				if (isset($REQUIRE_LIB['bootstrap5'])) {
-					echo <<<EOD
-<script>
-$(document).ready(function() {
-	$('.markdown-body table').each(function() {
-		$(this).addClass('table table-bordered');
-	});
-});
-</script>
-EOD;
-				}
 				echoUOJPageFooter(array('ShowPageFooter' => false));
 			} elseif ($this->type == 'slide') {
 				uojIncludeView('slide', array_merge(
diff --git a/web/app/views/blog-preview.php b/web/app/views/blog-preview.php
index ec85ae8..ee050dd 100644
--- a/web/app/views/blog-preview.php
+++ b/web/app/views/blog-preview.php
@@ -39,16 +39,6 @@ text-decoration-none text-body
 			<article class="markdown-body">
 				<?= $content ?>
 			</article>
-
-			<?php if (isset($REQUIRE_LIB['bootstrap5'])): ?>
-			<script>
-				$(document).ready(function() {
-					$('.markdown-body table').each(function() {
-						$(this).addClass('table table-bordered');
-					});
-				});
-			</script>
-			<?php endif ?>
 			<!-- content end -->
 
 		<?php elseif ($blog_type == 'slide'): ?>