The invention discloses a system for realizing remote control to terminal data comprising a terminal management subsystem and terminals, wherein the terminal management subsystem is used to receive a data operation request for the terminal, obtain information of the terminal according to the data operation request, transmit a data operation instruction to the terminal, and instruct the terminal to perform a user data operation; and the terminal is used to receive the data operation instruction from the terminal management subsystem and perform a data control operation on the data in the terminal according to the data operation instruction. The invention discloses also a method for realizing remote control to terminal data. In the case that the mobile terminal is lost or authorized temporarily to be used by others, the present invention can implement locking, wiping and unlocking the data of the terminal according to user requirements.