Recently when I was working on some new sites, Baidu snapshots were always not updated. Some were included and the website rankings were established. After a while, the snapshots retreated. I think this Baidu snapshot reversion is a warning, indicating that there is a problem with your website. I think the problems generally come from these aspects.
(1) You have over-optimized the keywords on the page, or you feel that the keyword density is not too high, but you have to determine it based on the characteristics of the industry. In some industries, the keyword density is very low, and you have to control it within this range. On the contrary, if the keyword density of this industry is relatively high, the keyword density of your website should also be increased appropriately.
(2) The distribution of keywords is the overall layout of the website and is related to column planning. You can't add a large number of keywords to a single small block of a page. Any fool will know that you are stuffing keywords, which will result in poor user experience and disgusting search engines. You need to separate the keywords in an orderly manner.
(3) Your keywords are not highly relevant to the page content. There are very far-fetched factors in it, and neither the page content nor the page keywords are reflected.
(4) Advertisements are flying all over the place. You can feel for yourself how many websites you can hang on a small website. If the content of the advertisements seriously exceeds the content of your page, then you must have a problem. Also, the advertisements you post must be relevant. If you are selling products, there is obviously a problem with posting a website that treats sexually transmitted diseases. There is also a need to advertise on quality websites. Even if your website keywords have been on the first page of Baidu for a long time, if you list a website that is not included and add so many pages to one page, you are afraid that others will not know and will not click on my website. Then you have to be careful. This is inherently dangerous, and it would be good if the ranking could be stable.
Of course, there are many reasons. I just listed a few that I think are more serious, because these happened to me. If you are the kind of person who adds links or posts like crazy, I suggest you take a break and summarize it. You are so tired like this. What is our SEO for? Isn’t it just for a better user experience? Right.
Be diligent, dedicated, and try your best. Everything will be fine. Don't engage in so much heresy. In the end, it will still be your own website that will be hurt. I hope everyone can share it more. I am just providing some foolish people's opinions.