The utility model discloses a defeated substation equipment repair based on condition of component essential data's preprocessing device, including a data processor, wherein: data processor includes interface unit, control processing unit, calculates processing unit, the interface unit includes network interface, display interface, control processing unit is including the demonstration output controller, data output controller, data input controller, data transceiver controller, the instruction transmission control unit that connect gradually, calculate processing unit and include FPGA, the DSP that is connected with FPGA, data input controller, data output controller are connected with network interface respectively, show that output controller is connected with display interface, data input controller respectively, data transceiver controller, instruct transmission control unit, DSP, FPGA respectively with the bus connection of system. The device has improved the essential data quality to data calculation ability and efficiency have been promoted, the automobile electric gearshift mechanism is simple in structure and low in cost.