The invention discloses a method and a system for pre-fetching a web page, and a method for accessing the web page. The method for pre-fetching the web page comprises the following steps that: in an idle state, a web browser sends a hyper text transfer protocol (HTTP) pre-fetching request to a web server; the web server receives the HTTP pre-fetching request, analyzes a current access page of a user according to the HTTP pre-fetching request, acquires resource links of a pre-fetched target page, and sends the resource links to the web browser; and the web browser receives the resource links, downloads static data in the pre-fetched target page according to the resource links in the idle state, and buffering the static data. When requesting to browse the relevant web page, the user can directly pre-downloaded access files such as cascading style sheets (CSS), Java scrip (JS) and pictures in a buffer memory of the client, so that re-downloading is avoided, the waiting time of the user is greatly shortened, and a user experience is improved.