The invention discloses a bulk cargo car loading device and belongs to the field of warehousing machinery. The bulk cargo car loading device is characterized in that the bulk cargo car loading devicecomprises a hopper assembly, a feeding conveying belt, a rope roller assembly, a sliding assembly and a first motor; the hopper assembly comprises a hopper, a supporting rod, a horizontal base and a first switch; the rope roller assembly comprises a winding drum, a rope and a base; the winding drum comprises a spindle, a barrel structure and circular side plates fixed to the two ends of the barrelstructure; and the sliding assembly comprises a sliding rod, a second sliding block and a third sliding block. Compared with the prior art, the bulk cargo car loading device has the characteristic that cargos are prevented from being dropped and broken or dust is prevented from being produced massively.