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This paper introduces the design plan of a distributed control and management system for power devices, and puts emphasis on the hardware compositon and working principle of the system. The system is divided into two parts: field devices and monitoring center. The fomer uses ARM to collect data and control MC35, a module of GPRS; the later uses Browser/Server to realize centralized management of remote devices. The combination of GPRS and Internet has realized the remote distributed control of power devices.