To provide a disassembling device for a trolley having excellent work efficiency in disassembling the trolley fixed to a carrier chain and further having excellent line environment and cost.

The disassembling device 10 for the trolley 8 fixed to the carrier chain traveling along a guide rail, wherein a pair of half plates 82a, 82b for rotatably supporting rollers 81 rolling on the guide rail are fastened to each other by bolts 84, 85, is provided with a clamp mechanism 4 for pressing the tip of the bolts 84, 85 in a thrust direction, and a pedestal 2 for receiving the pressing force of the clamp mechanism 4 by a bolt head 84b and applying rotational torque to the head 84b.