There are dozens of causes listed. See the following:
(1) conflicts with Baidu's Administrator Manual
Cause: for example, accumulating keywords and hiding text. If this happens, even if Baidu has already included you, don't be glad to be confused, because it will be removed slowly during the update process. The second-level domain name and blog are crossly connected.
Solution: let alone this. Please modify your page! In addition, do not use second-level domain names excessively. Blog cross-connection is useless now. You can leave one or two connections in it. It is best to remove many connections.
(2) Poor originality of website content
Cause: almost all content is collected, and it is a very popular collection article. Baidu will suddenly include you on thousands of pages, but after Baidu's indexing, it will be retrieved again within a certain period of time. If your content has no value, it will be discarded.
Solution: After the collection, modify it and release it. Don't be too lazy. You can simply browse the article and change the paragraph or part of the content, at least a bit different from others. It is best to create an original one, and leave a copyright on the page.
(3) website irregularities
Cause: there are too many titles and keywords. Some Webmasters like to put all the keywords related to the search. It is useless to put 10 thousand keywords. There is also an unreasonable description. If you are a new station, you 'd better set it up.
Solution: leave three or four keywords in the title, which Baidu does not like. We recommend that you set it to the page subject + topic name + website name. As for keywords, it doesn't matter if you add them, but at least some related content should appear on the page. The setting of the description is very simple. As long as the language is fluent, make a rough summary of the page. It is enough to have two or three keywords.
(4) website revision
Cause: if the website is not modified, it has been submitted to Baidu, which makes great changes and updates. The category and title are exchanged. Sometimes there are tests or other content that is irrelevant to the website. These are seo taboos.
Solution: Locate the website and stick to it. You can add new categories and content. It is best not to delete old content randomly. If you change the space, you 'd better change it in advance. Ensure that the content of the previous space exists for a period of time, just in case.
(5) website links
Cause: if the website lacks external links or external connections gradually decrease, Baidu will pay less attention to your website and gradually reduce the content to be included. The quality of the link is very important. Spam connection is preferred! Also remove the dead chain. In addition, check your page. If a link points to the blocked website, your website will also be affected.
Solution: check the external connections of the website. If there are few connections, exchange them, or post on some big site forums that may interest others and leave a connection. The more people reply, the better the effect. If there is a connection in the site pointing to the blocked site, delete it as soon as possible.
(6) website space
Cause :. This is especially important to note that the stability of the server has not been taken into account by many friends when choosing the server. Imagine that if your site cannot be opened for three days or two days, even if the search engine wants to search for your page, it cannot be indexed.
Solution: pay attention when buying a space and find a reputable IDC. Don't just make it cheap. If there are frequent problems, don't say Baidu, and Internet users cannot afford it. After all, your website won't attract Baidu's attention. In addition, when buying a space, check the site on the virtual host IP address, including the information, and the number of closed sites.
(7) website security
Cause: If your website is infected with malicious code or intentionally infected with Trojans, Baidu can analyze the issue. It will reduce your trust. In addition, these hackers use tools to intrude, modify, or delete most pages.
Solution: back up data regularly and solve problems in a timely manner. Generally, Baidu updates are hard-working at night. There are not many updates to personal sites every day. If the process is not normal, it should be avoided immediately.
(8) improper website optimization
Cause: if you have a certain understanding of SEO, you can deliberately modify the website, and over-optimize the website. Although there is no obvious cheating, there is no value at all. Although Baidu can get the traffic, after all, the website is provided for browsing by others. If you return too low, it will not work. Baidu does not always advocate the so-called user experience. In addition, the search engine settings are also disgusted with over-doing seo sites.
Solution: Do not optimize it too much. The essence of SEO is to serve search engines, not to cheat. Measure the test taker's knowledge about everything.
(9) website optimization methods
Cause: The debate in the seo industry on white hats, black hats, and gray hats has been particularly long-lasting. However, as far as I know, some major seo companies use white hats as a mainstream means, not to say that they are good, but relatively less risky. Many new people do not know how to get involved. The result is that the website is often de-listed by Baidu.
Solution: black hats often work faster than white hats, but after all, they are highly risky. If you are a newbie and your website is very important, let me give you a piece of advice: find a professional seoer, preferably a company (considering the ranking stability and service period, the company is more reliable than the individual). The key is to find a reliable seoer. Never try it at will. After all, it is troublesome to accidentally get a website named K, not to mention optimization.
(10) website unlucky
Cause: Maybe you are unlucky. You may encounter Baidu's major updates or algorithm changes, and your site is just the part of the refresh.
Solution: there is no good way. You only need to wait for Baidu to record it. If you are a SEO Guru, you don't have to read your article to avoid disappointment :)
(11) website closure
Cause: your website has been closed, but Baidu still has a lot of related information. Forum categories are common, but the number of indexed items is decreasing.