The invention discloses a design method of a mobile security sandbox, and the core is to protect a mobile terminal of a user by detecting the security of an application by a server. The security sandbox of the mobile terminal is designed under an Android operating system, and the main function is to design the security sandbox; and through the security detection of the application, the user can understand the security degree of the application, and the user can remotely unload applications and erase data to protect the privacy of the user; and in addition, a process communication module is provided and used for implementing a data transfer mode between andorid applications. The project overall adopts an MVC framework, and integrates a lot of Android development knowledge points including four components of Android, a security system and a communication system. On an Android platform, the mobile security sandbox can be designed to achieve the above various functions.