这就是我上述问题的答案

add_action(\'pre_user_query\',\'ap_pre_user_query\');
function ap_pre_user_query($user_search) {
  $user = wp_get_current_user();
  if ($user->ID!=1) { // Is not administrator, remove administrator (you can add any user-ID)
    global $wpdb;
    global $user_ID;
    //Fetch the custom field value added in user section
    $meta = get_user_meta( $user_ID );
    $selected_author_id = unserialize($meta[\'select_md\'][0]);
    $count = count($selected_author_id);
    //to the data you got add the current user to it
    $selected_author_id[$count] = $user_ID;
    $store_ids = \'\';
    foreach($selected_author_id as $ids){
        $store_ids .= $ids.\',\';
    }
    $final_ids = rtrim($store_ids,\',\');
    //This query will return you the result you want
    $user_search->query_where = str_replace(\'WHERE 1=1\',"WHERE 1=1 AND {$wpdb->users}.ID<>1 AND {$wpdb->users}.ID IN (".$final_ids.")",$user_search->query_where);
  }
}