Phishing websites usually refer to websites that pretend to be banks and e-commerce companies and steal private information such as bank accounts and passwords submitted by users, which can be killed by computer housekeepers. "Phishing" is a kind of online fraud, which means that criminals use various means to fake the URL address and page content of the real website, or use the loopholes in the server program of the real website to insert dangerous HTML codes into some pages of the website to defraud users of personal information such as bank or credit card accounts and passwords. The frequent appearance of "phishing websites" 1 has seriously affected the development of online financial services and e-commerce, endangered public interests and affected public confidence in using the Internet. Phishing websites usually pretend to be bank websites and steal account and password information submitted by visitors. It is usually spread by e-mail, in which a disguised link connects the recipient to a phishing website. The page of phishing website is completely consistent with the real website interface, and visitors are required to submit their account numbers and passwords. Generally speaking, the structure of phishing websites is very simple, with only one or several pages, and the website address is slightly different from the real website.