The invention discloses a privilege control method in device management, and the method comprises: a terminal receives an operating command sent by a server, and the operating command contains a target node and a node mark; the server is judged on whether the privilege thereof reaches the configured privilege or not, when the privilege of the server reaches the configured privilege, and the server has the access control privilege of the target node corresponding to the node mark, the operating command is executed. The invention solves the problem that any server can create any type of management object at the terminal, resulting in uncontrollable management objects, and the system security is improved. The invention also discloses a system and a terminal of privilege control in device management.