The invention provides a method for optimizing a website by using web auditing, which comprises the following steps that: 1.1) enabling Web auditing equipment to configure a web server IP (Internet Protocol) and a web server port to obtain Web real-time flow; 1.2) obtaining web access information contained in the web real-time flow, wherein the web access information comprises a URL, access time and an access user; 1.3), storing the web access information in an access information base; wherein the access information base subsection comprises an ID, a URL, access time, an access user and accesstimes; 2) classifying the website directories by a website manager to form a website directory library; wherein the website directory library comprises a first-level directory, a second-level directory and a URL; wherein the first-level directory is a website layout large class, the second-level directory is a sub-module in the website layout large class, and the URL link is a link contained in the sub-module. Website optimization can be rapidly and effectively carried out on the user, website layout can be carried out by practically and effectively meeting the requirements of the user, and effective information can be rapidly pushed to the user for consultation.