The utility model discloses an auxiliary test and remote control device for a signal code sending box of a general locomotive. The auxiliary test and remote control device comprises a network server,an upper computer and a lower computer which are connected with one another wirelessly, The lower computer comprises a single-chip microcomputer control module, and a channel on/off control module, achannel voltage/current detection module, a frequency shift signal identification module, a network transmission module, a storage unit module, a key control module and a display unit module which arerespectively connected with the single-chip microcomputer control module. Wherein the channel on/off control module is connected with the output end of the code sending box, the channel voltage/current detection module is connected with the test loop line, and the channel on/off control module, the channel voltage/current detection module and the frequency shift signal identification module are sequentially connected. The code sending box can be remotely and independently controlled, the loop current and frequency shift information of the code sending box can be remotely adjusted, the code sending mode can be set, normal use of the code sending box cannot be affected when the device is abnormal, fault guiding safety is achieved, convenience is provided for maintenance work, and the working efficiency is improved.