The invention provides an auxiliary device for railway freight, and relates to the field of railway freight. The auxiliary device comprises a rack, an overturning control mechanism, an overturning boxassembly, an intermittent rotation control mechanism, a power transmission mechanism and a transfer box assembly. The auxiliary device has the beneficial effects that cargoes are evenly distributed into each transfer box, the cargoes are equivalently distributed, it is guaranteed that the cargoes in each transfer box are equal, the operation that the cargoes are manually carried into the transferboxes one by one, and it cannot be conveniently guaranteed that the cargoes in each transfer box are equal through manual carrying is omitted, and the working efficiency is improved. The overturningcontrol mechanism is arranged at the upper end of the rack, the overturning box assembly is rotationally connected to the upper end of the rack, the overturning control mechanism and the overturning box assembly are in engaged transmission connection, the intermittent rotation control mechanism is fixedly connected to the middle of the rack, the intermittent rotation control mechanism and the overturning box assembly are in transmission connection through a belt, and the power transmission mechanism is fixedly connected to the intermittent rotation control mechanism.