After the completion of the local test site, I uploaded it to the space and found an Internal Server Error 500. In this way, I had to close the Clean URL before. Htaccess could work and the 301 jump could be realized. But when I open clean URL, if you’re using drupal’s default.htaccess, you won’t find the page. Now I’ve simply rewritten.htaccess, because All I need is a 301 jump.
The original source: http://suyou.info/node/32

< IfModule mod_rewrite.c>

RewriteEngine on

RewriteBase /

RewriteCond %{HTTP_HOST} ^www.(.+)$ [NC]

RewriteRule ^ http://%1%{REQUEST_URI} [L,R=301]

RewriteCond %{REQUEST_FILENAME} ! -f

RewriteCond %{REQUEST_FILENAME} ! -d

RewriteRule ^(.*)$ index.php?q=$1 [L,QSA]

< /IfModule>