Research on the optimization of key technologies in the search engine of the seo website. By mastering seo technology, the site can be better captured by search engines and better ranked in search results, thus facilitating search engines to retrieve information and returning search information that is sufficiently attractive to viewers. The website construction strategy for the search engine is to better enable the search engine to capture the content of the site and to obtain a good ranking in the search engine. The key point in maintaining the website at a later stage is that it should be updated in a timely manner without frequent re-engineering and on the content of the website. [keywords] seo; web promotion; web site optimization: search engine optimization, the main task of which is to understand the characteristics and working principles of the various search engines as a basis for optimizing the web pages, increasing their ranking in the search engine, thereby further increasing the number of visits to the site and ultimately enhancing the marketing or promotional capacity of the site. As users search information over the internet, the usual means are to search using search engines (e. G., 100 degrees, google, etc.). In the area of network outreach, therefore, the optimization of the search engine has a significant role to play and has received much attention from a wide range of websites. Seo, which follows the scientific and comprehensive theoretical mechanism of the search engine, taps the full potential of the site through sound planning and deployment of its interactive diplomacy strategy for website structure, web text language and site-to-site interaction. Making the site more search-driven (search engineering) gives it a strong natural competitive edge and a higher number of entries in the search engine. 1 the purpose classification and role of the seos is that the underlying search strategies of the major search engines are very different because the ranking algorithms are guided by the idea of “good search experience for search users”. By mastering seo technology, the site can be better captured by search engines and better ranked in search results, thus facilitating search engines to retrieve information and returning search information that is sufficiently attractive to viewers. Through this purpose, viewers are directed to click on the business website to increase the number of visits. The main categories through seo are: first, to attract potential customers on the search engine to the site itself and to understand and purchase search products. For example: internet stores, marketing business websites, etc. Wanted to gain significant traffic from the search engine, a certain entity or virtual product was introduced to the browser. For example, the websites of producer brands, friends, membership model sites, etc. The second is an attempt to increase the visibility of the brand by attracting sufficient access from the search engine. For example: china's mobile, u. S. And so on. Relying on the flow of search engines, it is used as a product to attract advertisers to the site. For example: google ads, ali's mother, 100% promotion, etc. The search engine is then trying to bring a significant amount of traffic to the site, so that the site's performance indicators can be elevated and it can be ranked higher, thereby attracting investors or being bought. 2 web construction strategy for search engines 2. 1 better allow search engines to capture content on their websites, since search engines can only read text information, important content or links should be used instead of flash, pictures, javasCript and so on. Also avoid the use of fRame and ifThe rame framework structure would otherwise not be searchable. The ideal structure of the site should be more flat, with as few levels as possible from the first page to the content page, so that the search engine can be handled more quickly. It is proposed to adopt a tree structure with three levels: the first page, the channel, the article (the content page). The increase in content at a later stage can be addressed by fine-tuning the branches (channels). In detail, it should be noted that the website should not be broken. Ensure that each page is accessible by at least one text link and that important content within the website is accessible at a relatively shallow level from the front page or from the structure of the website. The content of the website should be rationalized, but not excessively disaggregated. At the same time, website navigation should be simple and clear, allowing viewers not only to quickly find the required content, but also to help search engines better understand the structure of the site. To this end, a navigation bar should be added to each page; for a site with a larger content, bread-crumb navigation (e. G. Current page of the front page) should be used to allow viewers to understand their current location. When using pictures for navigation, use alt notes
