1, the site content duplication: If a site content too much repetition, will make search engine to reduce the credit to your site, so that Baidu will be your site down right processing, thus affecting the site rankings.
2, website cheat: If the page contains malicious ads, malicious code or malicious plug-ins, pages have links to cheat sites, may be considered as cheating sites, deceptive redirection, deceptive replacement of web content, misuse of keywords, malicious interchange links, trading links and so will make the search engine on our site to reduce the right to punish, thereby affecting the site rankings.
3, UIL Specification: If our website UIL specification does not handle well also will make the search engine to our website to reduce the right to punish, thus affecting the website ranking.
4, keyword matching: If our site keyword is to do is the cup, and the site provides other things, then this does not match, there are deceptive user behavior, this will also make the search engine on our site to reduce the right penalty, thus affecting the site rankings.
5, H1 Tags: a page can only appear a H1 tag, if the page appears more than H1 or more H1 tags, it will also make the search engine on our site to reduce the right to punish, thus affecting the site rankings.
6, the server does not manage this is likely to cause the site to drop the right, or is the DNS resolution sometimes Baidu crawl site designated site may also fall right oh.
Administration
Site down the right there are several, site content duplication, site cheating, UIL norms, keyword matching, H1 tags and so these do not do a good job will make our site down right.