It should be noted that the old domain name mentioned here does not refer to the length of its registration time, but to the length of its historical time of website establishment. Let's take a look at what good seo optimization there is in the old domain name! Benefits of the old domain name 1. The effect of the old domain name website construction is 1. The old domain name was quickly included. The author built a website with the old domain name without doing anything some time ago, and updated the snapshot on the same day. I believe that the relevant mechanisms and external links of search engines play a key role here. After testing, it will take Baidu at least one month to include a website with a new domain name. But if it is an old domain name, the collection time will be greatly reduced, which is obvious. 2. Old domain names rank well. 2. Notes on the use of old domain names 1. Before choosing an old domain name, we should study the website history of the domain name. You should choose those who have not passed K or have no bad records, and there are as many external links as possible, so there is no need to include more. 2. Correlation between the old domain name and the content of the new website. The content of the historical website should be as relevant as possible to the content of the new website, at least with industry relevance. Only in this way can we better inherit the knowledge of old domain names from search engines and gain the trust of search engines. Without re-establishing the understanding and trust relationship of the domain name. 3. Making a friendly 404 page Because it is difficult for the old domain name to avoid the appearance of 404 pages, and even the new site may have a dead chain, it is particularly important to make a friendly 404 page. In the 404 page, don't forward it, but have a home page link to guide users to the home page, which is convenient for spiders to crawl and improve the user experience. Third, the advantages of the old domain name 1. You don't need to go through the investigation of search engines. Websites with new domain names usually have a sandbox effect observation period, so that in the initial stage of the website, the external chain grows too fast, rather than naturally, which will make search engines feel that the website is abnormal and wonder if it is cheating, so that the website will be dropped by K. However, after the observation period, as long as the old domain name is increased regularly, even if the number is more, there will be no K.2. The benefits of the old domain name are not only the length of its website, but also the weight value accumulated during the construction of the original website of the old domain name.