System and method for protecting data of virtual machine

The invention discloses a system and a method for protecting data of a virtual machine and relates to the technical field of cloud computing virtualization data safety. The objective of safe access of the data of the virtual machine is achieved by performing verifying, marking and network control on a request for accessing the data of the virtual machine in Domain0 and combining data behavior and flow direction monitoring inside the virtual machine. By the system and the method, the problem that the data of the virtual machine are illegally accessed by cloud outside or other virtual machines due to the fact that under multi-tenant virtual machine environment, services arranged by the virtual machine have loopholes or are wrong in configuration and applications or inner cores of the virtual machine have bugs is solved.