A method and an electronic device for authentication is provided. When a user performs a touch operation on an icon of a first application, a biological feature of the user is directly collected without displaying an authentication screen, the collected biological feature is compared with a biological feature bound to the first application, and when a comparison result indicates that the collected biological feature matches the biological feature bound to the first application, the first application is logged in to. Based on the foregoing process, authentication can be implemented through only one interaction between the user and the electronic device, so that user operations are simplified.