diff --git a/uninstall.php b/uninstall.php
index 31b51d4..9459c58 100644
--- a/uninstall.php
+++ b/uninstall.php
@@ -1,20 +1,29 @@
 <?php
 // WP_UNINSTALL_PLUGINが定義されているかチェック
-if ( ! defined( 'WP_UNINSTALL_PLUGIN' ) ) {
-	die;
+if (!defined('WP_UNINSTALL_PLUGIN')) {
+    die;
 }
 
 // オプション設定の削除
-delete_option( '_mtee' );
+delete_option('_mtee');
 
-//Todo: タームメタの一括削除方法を確認
+//post,termの設定削除
+global $wpdb;
+
+$tables = array(
+    'postmeta',
+    'termmeta'
+);
 
 $delete_post_meta_keys = array(
-	'mtee_meta_keywords',
-	'mtee_meta_description',
-	'_mtee_robots_noindex',
-	'_mtee_robots_nofollow',
+    "'" . 'mtee_meta_keywords' . "'",
+    "'" . 'mtee_meta_description' . "'",
+    "'" . 'mtee_canonical_url' . "'",
+    "'" . '_mtee_robots_noindex' . "'",
+    "'" . '_mtee_robots_nofollow' . "'",
 );
-foreach ( $delete_post_meta_keys as $delete_post_meta_key ) {
-	delete_post_meta_by_key( $delete_post_meta_key );
-}
+$delete_targets = implode(',', $delete_post_meta_keys);
+foreach ($tables as $table) {
+    $stmnt = 'DELETE FROM ' . $wpdb->prefix . $table . ' WHERE meta_key IN(' . $delete_targets . ')';
+    $wpdb->query($stmnt);
+}
\ No newline at end of file