The invention relates to a system and a method for controlling energy consumption of mobile equipment. In the embodiment of the invention, the system for controlling the energy consumption of the mobile equipment comprises a load determining device, an environmental characteristic quantity determining device, a compression judging device and a compression executing device, wherein the load determining device is used for determining the types and the sizes of loads to be sent by the mobile equipment; the environmental characteristic quantity determining device is used for determining the environmental characteristic quantity of the mobile equipment; the compression judging device is used for the compression judgment of the loads to be sent according to the determined types and sizes of theloads and the environmental characteristic quantity of the mobile equipment; and the compression executing device is used for executing the compression for the loads according to the judgment result of the compression judging device so as to send the output. By the system and the method, the energy consumption of the mobile equipment can be improved, thereby prolonging the standby time of the mobile equipment.