The invention relates to a convenient login method and device. The method comprises the following steps: acquiring user information in a code scanning mode, a USB key authentication mode or a face recognition mode; the server querying user login information in a database after acquiring the user information; and realizing a login process through the user login information. The system has the characteristics of multiple login modes, high confidentiality, convenience in operation and the like, greatly reduces the time spent on system login by workers, improves the office efficiency, and effectively ensures the privacy of accounts. According to the invention, the login of each system can be completed more conveniently, the recording and input work required by a user is greatly reduced, and the working efficiency of the user is greatly improved.