Ok I saw that on the plugin website. I am so sorry to tell you that this plugin indeed solved some problem but not 100% perfect.
Before I installed this plugin, once I click the publish button, the edit page goes into a blank page.
After I installed this plugin, the post time I publish the post, the page goes into a blank page, but if I edit the post again and re-publish, the page would be normal.
I think there must be something wrong with my post.php file, I replace it with a new one, but in vain.
Anyway, thank you for providing me this useful plugin.~~