The most important task apart from designing your website is the optimization of its elements in order to increase visibility in search results on search engines like Google. With the rapid development of information technology, search engine optimization (SEO) technology has attracted more and more attentions. The meaning of SEO (search engine optimization) is the process of making changes to your website design and content in order to help it appear in the search engines. By optimizing your website for the search engines, you can increase your visibility in the organic, or un-paid, search engine results. In order to improve their website visit quantity, SEO techniques can make a better ranking in the search result using the keyword selection and deployment, high quality back links, rational website constitution, and rich content, etc. SEO is a necessary tool for the success of your website in search engine listings, thereby making it more likely that the end user will choose to visit the site.