Disclosed in the present invention are a method for displaying website authentication information and a browser, the method comprising: acquiring, by cloud query, authentication parameter information of a website provided by a network address authentication server after a network address change event is triggered, wherein the authentication parameter information at least comprises display picture information of authentication information, and the display picture information of the authentication information is generated by the network address authentication server according to the source of the authentication information and website type information; and displaying the authentication information of the website in the browser according to the authentication parameter information. According to the technical solution provided by the present invention, the information authenticated by authority can be displayed in real time when users visit the website, enabling the users to have a proper understanding of the security of the currently-visited website.