试试这个，对我有用

添加您的函数。php

add_action(\'init\', function(){
    global $wp_rewrite;
    $wp_rewrite->author_base = \'profile\';
    $wp_rewrite->flush_rules();
});

实例

<?php
$author = get_user_by(\'slug\', get_query_var(\'author_name\')); 
echo \'<pre>\';
var_dump($author);