Search engine promotion refers to the use of search engines, catalogues and other online information retrieval tools for website promotion methods. Because the basic form of search engine can be divided into web spider search engine (search engine for short) and manual catalog-based search engine (catalog for short), so the form of search engine promotion also correspondingly has the method based on search engine and the method based on catalog, the former includes search engine. Optimization, keyword advertising, fixed ranking, content-based advertising and other forms, while the latter is mainly in the catalog of appropriate categories for website login. With the further development and change of search engine form, there are also some other forms of search engine, but most of them are based on these two forms. Search engine promotion methods can also be divided into a variety of different forms, common are: login free catalogue, login paid catalogue, search engine optimization, keyword advertising, keyword bid ranking, web content positioning ads, etc. From the current trend of development, the status of search engine in network marketing is still important, and is recognized by more and more enterprises, the way of search engine marketing is constantly evolving, so we should choose the appropriate way of search engine marketing according to the changes in the environment