The invention provides an SEO website construction realizing method capable of optimizing a search engine, which comprises the following: a step of website construction, in which website pages are compiled by a DIV+CSS technique, a server is configured, and an IP address is allocated automatically; a step of SEO website individual construction, in which the SEO website individual construction is realized by programming, and the SEO website individuals are stored in the server by class; and a step of peripheral SEO system database construction, in which a basic database is configured, the SEO website individuals are matched automatically according to key words and a peripheral SEO automatic voting ecological system is generated, wherein the peripheral SEO automatic voting ecological system automatically acquires a website address and generates a website map; and meanwhile, the search engine login is completed at the same time, the interconnection between different webpages and internal voting are realized, and the state is displayed. The invention also provides an SEO website system for implementing the method.