Electric locomotive auxiliary control device

The invention provides an electric locomotive auxiliary control device. The electric locomotive auxiliary control device comprises a parent board and at least one child circuit board, wherein the child circuit board comprises at least one master control board, at least one signal input-output board and at least one network board, the master control board is used for controlling different auxiliaryreverse power supply modules and/or charging modules in an auxiliary electric system separately, the signal input-output board is used for collecting an input signal from the auxiliary electric system and inputting the signal into the master control board, and receiving an output signal returned by the master control board, and the network board is used for connecting the master control board andan external device, so as to enable the master control board and the external device to conduct network communication. The electric locomotive auxiliary control device can collect information of different auxiliary reverse po