diff --git a/class/mtee.php b/class/mtee.php
index 0042231..8f6bd46 100644
--- a/class/mtee.php
+++ b/class/mtee.php
@@ -13,6 +13,8 @@ if (!class_exists('MTEE')) {
      */
     class MTEE {
 
+        use mtee_utils;
+
         public function __construct() {
             add_action('admin_menu', array($this, 'add_pages'));
         }
@@ -32,7 +34,7 @@ if (!class_exists('MTEE')) {
             //$_POST['_mtee'])があったら保存
             if (isset($_POST['_mtee'])) {
                 check_admin_referer('check_options');
-                $opt = $_POST['_mtee'];
+                $opt = $this->get_post_sanitize_data('_mtee', 'array');
                 update_option('_mtee', $opt);
                 require_once MTEE_CONFIG::MTEE_TEMPLATE_DIR . 'success.php';
             }
diff --git a/class/mtee_canonical_setting.php b/class/mtee_canonical_setting.php
index 4175f5c..f4d42bf 100644
--- a/class/mtee_canonical_setting.php
+++ b/class/mtee_canonical_setting.php
@@ -11,6 +11,8 @@ if (!class_exists('mtee_canonical_setting')) {
      */
     class mtee_canonical_setting {
 
+        use mtee_utils;
+
         private $options;
 
         public function __construct($options) {
@@ -53,9 +55,9 @@ if (!class_exists('mtee_canonical_setting')) {
         public function insert_meta_fields() {
             global $post;
             echo '<div class="meta_key_desc_box">
-<label style="font-weight: bold; display: block">Canonical URL</label>
+<label class="block_bold">Canonical URL</label>
 <div>
-<input style="width:100%" type="text" name="' . MTEE_CONFIG::MTEE_CANONICAL_URL . '" 
+<input class="width_100" type="text" name="' . MTEE_CONFIG::MTEE_CANONICAL_URL . '" 
 value="' . get_post_meta($post->ID, MTEE_CONFIG::MTEE_CANONICAL_URL, true) . '"
 placeholder="' . $this->set_default_post_canonical_url($post->ID) . '" />
 </div>
@@ -64,11 +66,7 @@ placeholder="' . $this->set_default_post_canonical_url($post->ID) . '" />
 
         // カスタムフィールドの値を保存
         public function save_meta_fields($post_id) {
-            if (!empty($_POST[MTEE_CONFIG::MTEE_CANONICAL_URL])) { //meta_keywordsが入力されている場合
-                update_post_meta($post_id, MTEE_CONFIG::MTEE_CANONICAL_URL, $_POST[MTEE_CONFIG::MTEE_CANONICAL_URL]); //値を保存
-            } else { //未入力の場合は値を削除
-                delete_post_meta($post_id, MTEE_CONFIG::MTEE_CANONICAL_URL);
-            }
+            $this->save_post_meta($post_id, MTEE_CONFIG::MTEE_CANONICAL_URL);
         }
 
         public function set_default_post_canonical_url($id) {
@@ -143,9 +141,7 @@ placeholder="' . $this->set_default_post_canonical_url($post->ID) . '" />
         }
 
         public function save_terms($term_id) {
-            if (array_key_exists(MTEE_CONFIG::MTEE_CANONICAL_URL, $_POST)) {
-                update_term_meta($term_id, MTEE_CONFIG::MTEE_CANONICAL_URL, $_POST[MTEE_CONFIG::MTEE_CANONICAL_URL]);
-            }
+            $this->save_term_meta($term_id, MTEE_CONFIG::MTEE_CANONICAL_URL);
         }
 
     }
diff --git a/class/mtee_noindexnofolow_setting.php b/class/mtee_noindexnofolow_setting.php
index d0d696c..09f10e6 100644
--- a/class/mtee_noindexnofolow_setting.php
+++ b/class/mtee_noindexnofolow_setting.php
@@ -11,6 +11,8 @@ if (!class_exists('mtee_noindexnofolow_setting')) {
      */
     class mtee_noindexnofolow_setting {
 
+        use mtee_utils;
+
         public function __construct($options) {
             //posts
             add_action('admin_menu', array($this, 'add_meta_fields'));
@@ -67,8 +69,8 @@ if (!class_exists('mtee_noindexnofolow_setting')) {
 
         // カスタムフィールドの値を保存
         public function save_meta_fields($post_id) {
-            update_post_meta($post_id, MTEE_CONFIG::MTEE_NAME_NOINDEX, $_POST[MTEE_CONFIG::MTEE_NAME_NOINDEX] ?? '');
-            update_post_meta($post_id, MTEE_CONFIG::MTEE_NAME_NOFOLLOW, $_POST[MTEE_CONFIG::MTEE_NAME_NOFOLLOW] ?? '');
+            $this->save_post_meta($post_id, MTEE_CONFIG::MTEE_NAME_NOINDEX);
+            $this->save_post_meta($post_id, MTEE_CONFIG::MTEE_NAME_NOFOLLOW);
         }
 
         //-------------------------------------------------------------------------------------------
@@ -141,12 +143,8 @@ nofollow
         }
 
         public function save_terms($term_id) {
-            if (array_key_exists(MTEE_CONFIG::MTEE_NAME_NOINDEX, $_POST)) {
-                update_term_meta($term_id, MTEE_CONFIG::MTEE_NAME_NOINDEX, $_POST[MTEE_CONFIG::MTEE_NAME_NOINDEX]);
-            }
-            if (array_key_exists(MTEE_CONFIG::MTEE_NAME_NOFOLLOW, $_POST)) {
-                update_term_meta($term_id, MTEE_CONFIG::MTEE_NAME_NOFOLLOW, $_POST[MTEE_CONFIG::MTEE_NAME_NOFOLLOW]);
-            }
+            $this->save_term_meta($term_id, MTEE_CONFIG::MTEE_NAME_NOINDEX);
+            $this->save_term_meta($term_id, MTEE_CONFIG::MTEE_NAME_NOFOLLOW);
         }
 
     }
diff --git a/class/mtee_ogp_post_setting.php b/class/mtee_ogp_post_setting.php
index 1bd22f5..0d54c44 100644
--- a/class/mtee_ogp_post_setting.php
+++ b/class/mtee_ogp_post_setting.php
@@ -10,6 +10,8 @@ if (!class_exists('mtee_ogp_post_setting')) {
      */
     class mtee_ogp_post_setting {
 
+        use mtee_utils;
+
         private $options;
 
         public function __construct($options) {
@@ -93,21 +95,10 @@ var ogp_img_name = ' . "'" . MTEE_CONFIG::MTEE_OGP_IMG . "'" . '
 
         // カスタムフィールドの値を保存
         public function save_meta_fields($post_id) {
-            if (!empty($_POST[MTEE_CONFIG::MTEE_OGP_TITLE])) { //meta_keywordsが入力されている場合
-                update_post_meta($post_id, MTEE_CONFIG::MTEE_OGP_TITLE, $_POST[MTEE_CONFIG::MTEE_OGP_TITLE]); //値を保存
-            } else { //未入力の場合は値を削除
-                delete_post_meta($post_id, MTEE_CONFIG::MTEE_OGP_TITLE);
-            }
-            if (!empty($_POST[MTEE_CONFIG::MTEE_OGP_DESC])) {
-                update_post_meta($post_id, MTEE_CONFIG::MTEE_OGP_DESC, $_POST[MTEE_CONFIG::MTEE_OGP_DESC]);
-            } else {
-                delete_post_meta($post_id, MTEE_CONFIG::MTEE_OGP_DESC);
-            }
-            if (!empty($_POST[MTEE_CONFIG::MTEE_OGP_IMG])) {
-                update_post_meta($post_id, MTEE_CONFIG::MTEE_OGP_IMG, $_POST[MTEE_CONFIG::MTEE_OGP_IMG]);
-            } else {
-                delete_post_meta($post_id, MTEE_CONFIG::MTEE_OGP_IMG);
-            }
+            $this->save_post_meta($post_id, MTEE_CONFIG::MTEE_OGP_TITLE);
+            $this->save_post_meta($post_id, MTEE_CONFIG::MTEE_OGP_DESC);
+            $this->save_post_meta($post_id, MTEE_CONFIG::MTEE_OGP_IMG);
+
         }
 
     }
diff --git a/class/mtee_ogp_tax_setting.php b/class/mtee_ogp_tax_setting.php
index e8ea9de..0fa1916 100644
--- a/class/mtee_ogp_tax_setting.php
+++ b/class/mtee_ogp_tax_setting.php
@@ -10,6 +10,8 @@ if (!class_exists('mtee_ogp_tax_setting')) {
      */
     class mtee_ogp_tax_setting {
 
+        use mtee_utils;
+
         private $options;
 
         public function __construct($options) {
@@ -139,18 +141,9 @@ var ogp_img_name = ' . "'" . MTEE_CONFIG::MTEE_OGP_IMG . "'" . '
         }
 
         function save_terms($term_id) {
-            if (array_key_exists(MTEE_CONFIG::MTEE_OGP_TITLE, $_POST)) {
-                update_term_meta($term_id, MTEE_CONFIG::MTEE_OGP_TITLE, $_POST[MTEE_CONFIG::MTEE_OGP_TITLE]);
-            }
-            if (array_key_exists(MTEE_CONFIG::MTEE_OGP_DESC, $_POST)) {
-                update_term_meta($term_id, MTEE_CONFIG::MTEE_OGP_DESC, $_POST[MTEE_CONFIG::MTEE_OGP_DESC]);
-            }
-            if (!empty($_POST[MTEE_CONFIG::MTEE_OGP_IMG])) {
-                update_post_meta($term_id, MTEE_CONFIG::MTEE_OGP_IMG, $_POST[MTEE_CONFIG::MTEE_OGP_IMG]);
-            } else {
-                delete_post_meta($term_id, MTEE_CONFIG::MTEE_OGP_IMG);
-            }
-
+            $this->save_term_meta($term_id, MTEE_CONFIG::MTEE_OGP_TITLE);
+            $this->save_term_meta($term_id, MTEE_CONFIG::MTEE_OGP_DESC);
+            $this->save_term_meta($term_id, MTEE_CONFIG::MTEE_OGP_IMG);
         }
 
     }
diff --git a/class/mtee_post_setting.php b/class/mtee_post_setting.php
index 1e4c3a0..68d7739 100644
--- a/class/mtee_post_setting.php
+++ b/class/mtee_post_setting.php
@@ -10,6 +10,8 @@ if (!class_exists('mtee_post_setting')) {
      */
     class mtee_post_setting {
 
+        use mtee_utils;
+
         private $options;
 
         public function __construct($options) {
@@ -60,16 +62,8 @@ placeholder="' . $this->set_default_description() . '"/>
 
         // カスタムフィールドの値を保存
         public function save_meta_fields($post_id) {
-            if (!empty($_POST[MTEE_CONFIG::MTEE_NAME_KEYWORDS])) { //meta_keywordsが入力されている場合
-                update_post_meta($post_id, MTEE_CONFIG::MTEE_NAME_KEYWORDS, $_POST[MTEE_CONFIG::MTEE_NAME_KEYWORDS]); //値を保存
-            } else { //未入力の場合は値を削除
-                delete_post_meta($post_id, MTEE_CONFIG::MTEE_NAME_KEYWORDS);
-            }
-            if (!empty($_POST[MTEE_CONFIG::MTEE_NAME_DESCRIPTION])) {
-                update_post_meta($post_id, MTEE_CONFIG::MTEE_NAME_DESCRIPTION, $_POST[MTEE_CONFIG::MTEE_NAME_DESCRIPTION]);
-            } else {
-                delete_post_meta($post_id, MTEE_CONFIG::MTEE_NAME_DESCRIPTION);
-            }
+            $this->save_post_meta($post_id, MTEE_CONFIG::MTEE_NAME_KEYWORDS);
+            $this->save_post_meta($post_id, MTEE_CONFIG::MTEE_NAME_DESCRIPTION);
         }
 
         public function set_default_keywords() {
diff --git a/class/mtee_tax_setting.php b/class/mtee_tax_setting.php
index 274a778..5671ebd 100644
--- a/class/mtee_tax_setting.php
+++ b/class/mtee_tax_setting.php
@@ -10,6 +10,8 @@ if (!class_exists('mtee_tax_setting')) {
      */
     class mtee_tax_setting {
 
+        use mtee_utils;
+
         private $options;
 
         public function __construct($options) {
@@ -127,12 +129,8 @@ class="tax-meta-field" />
         }
 
         function save_terms($term_id) {
-            if (array_key_exists(MTEE_CONFIG::MTEE_NAME_KEYWORDS, $_POST)) {
-                update_term_meta($term_id, MTEE_CONFIG::MTEE_NAME_KEYWORDS, $_POST[MTEE_CONFIG::MTEE_NAME_KEYWORDS]);
-            }
-            if (array_key_exists(MTEE_CONFIG::MTEE_NAME_DESCRIPTION, $_POST)) {
-                update_term_meta($term_id, MTEE_CONFIG::MTEE_NAME_DESCRIPTION, $_POST[MTEE_CONFIG::MTEE_NAME_DESCRIPTION]);
-            }
+            $this->save_term_meta($term_id, MTEE_CONFIG::MTEE_NAME_KEYWORDS);
+            $this->save_term_meta($term_id, MTEE_CONFIG::MTEE_NAME_DESCRIPTION);
         }
     }
 
diff --git a/css/mtee.css b/css/mtee.css
index 6f012f6..7777409 100644
--- a/css/mtee.css
+++ b/css/mtee.css
@@ -125,6 +125,15 @@ label.mtee-label {
     margin-top: 1em;
 }
 
+.width_100{
+    width: 100%;
+}
+
+.block_bold {
+    font-weight: bold;
+    display: block
+}
+
 @media screen and (max-width: 768px) {
     .mtee_description_tmp_list {
         display: block;
diff --git a/meta-tag-etc-extend.php b/meta-tag-etc-extend.php
index 265ef8a..2fa8331 100644
--- a/meta-tag-etc-extend.php
+++ b/meta-tag-etc-extend.php
@@ -18,6 +18,7 @@ Twitter
 */
 
 include_once __DIR__ . '/mtee_config.php';
+include_once MTEE_CONFIG::MTEE_TRAIT_DIR . 'mtee_utils.php';
 include_once MTEE_CONFIG::MTEE_CLASS_DIR . 'mtee.php';
 
 //admin css/js setting
diff --git a/template/index.php b/template/index.php
index b14ab90..f404dc4 100644
--- a/template/index.php
+++ b/template/index.php
@@ -199,7 +199,7 @@ $rss_disabled = $this->get_key_setting('rss_disabled');
                     <input type="hidden" name="_mtee[wp_ver_disabled]" value="0">
                     <input type="checkbox"
                            name="_mtee[wp_ver_disabled]" <?php checked($wp_ver_disabled, 1); ?>
-                           value="1">削除
+                           value="1">表示しない
                 </label>
             </div>
             <div class="mtee-form-box mtee_box_border">
@@ -208,7 +208,7 @@ $rss_disabled = $this->get_key_setting('rss_disabled');
                     <input type="hidden" name="_mtee[asset_ver_disabled]" value="0">
                     <input type="checkbox"
                            name="_mtee[asset_ver_disabled]" <?php checked($asset_ver_disabled, 1); ?>
-                           value="1">削除
+                           value="1">表示しない
                 </label>
             </div>
             <div class="mtee-form-box mtee_box_border">
diff --git a/trait/mtee_utils.php b/trait/mtee_utils.php
new file mode 100644
index 0000000..1b2b0f8
--- /dev/null
+++ b/trait/mtee_utils.php
@@ -0,0 +1,38 @@
+<?php
+if (!defined('ABSPATH')) {
+    exit;
+} // Exit if accessed directly
+
+if (!trait_exists('mtee_utils')) {
+
+    trait mtee_utils {
+
+        public function get_post_sanitize_data($var_name, $type = 'str') {
+            if ($type == 'str') {
+                return filter_input(INPUT_POST, $var_name, FILTER_SANITIZE_STRING);
+            }
+            if ($type == 'array') {
+                return filter_input(INPUT_POST, $var_name, FILTER_SANITIZE_STRING, FILTER_REQUIRE_ARRAY);
+            }
+
+        }
+
+        public function save_post_meta($post_id, $var_name) {
+            if (!empty($_POST[$var_name])) {
+                update_post_meta($post_id, $var_name, $this->get_post_sanitize_data($var_name)); //値を保存
+            } else { //未入力の場合は値を削除
+                delete_post_meta($post_id, $var_name);
+            }
+        }
+
+        public function save_term_meta($term_id, $var_name) {
+            if (array_key_exists($var_name, $_POST)) {
+                update_term_meta($term_id, $var_name, $this->get_post_sanitize_data($var_name));
+            } else { //未入力の場合は値を削除
+                delete_term_meta($term_id, $var_name);
+            }
+        }
+
+    }
+
+}
\ No newline at end of file