[xijunjie9123]

问题解决了，提供一个代码，插入到function.php里即可

//Add Featured Thumbnail to Admin Post Columns
add_filter('manage_posts_columns', 'posts_columns', 5);
add_action('manage_posts_custom_column', 'posts_custom_columns', 5, 2);
 
function posts_columns($defaults){
    $defaults['riv_post_thumbs'] = __('Thumbs');
    return $defaults;
}
 
function posts_custom_columns($column_name, $id){
    if($column_name === 'riv_post_thumbs'){
        echo the_post_thumbnail( array(100,100) );
    }
}

 

来自成都, 四川, 中国