Before 2000, the search engine in our country mainly depended on the manual edit classified catalog as the main search engine. The work that needs to be done in the marketing includes website description, preparing the key words and other basic information, submitting to each search engine free of charge and keeping track. Once submitted successfully, there is little need to make changes to Meta tags and so on, because the content of the information included in the search engine will not change as a result of site changes.