In view of the loopholes and defects in the application softwares of Android mobile phones, this paper analyzes the current solutions of mobile phone login system, using multi factor (account number, password and verification code, login numbers, login location, face recognition) scheme to build secure login system for mobile phones. The login system consists of login, registration, login audit, WeChat alerts, and it introduces the design ideology and technology route. It mainly introduces security verification logic and log audit function, the user identification and login behavior audit, to provide users with a safe, easy-to-use, and low cost solution.