Pagoda server PHP+mysql web page URL jump problem

Excuse me, after uploading the PHP+MySQL database to the pagoda server, only the home page is normal to access the website. After clicking other navigation columns, the URL becomes localhost. http://localhost/index.php?The localhost in catid=1 can be accessed by replacing it with a domain name, but the domain name is not redirected. The corresponding information of the database in the php file is set.That's right, if the host is changed to the domain name public network ip, even the home page cannot be accessed, so it can only be changed to localhost!