The utility model relates to a scraped car disassembly online system which comprises a loading device and a conveying device, wherein the loading device comprises sliding sledges; the conveying device comprises at least two rails, line movers siding on the rails and roller beds located on the side of a station, and the rails in two rows are positioned on two sides of the roller beds; each of the rails is provided with at least one line mover, each of the sliding sledges is placed on the line mover, and each of the line movers is provided with a first sliding driving mechanism which drives the sliding sledge to slide on the line mover; each of the roller bed is provided with a second sliding driving mechanism which drives the sliding sledge to slide on the roller bed, the line mover on the rail on one side of a disassembly station is used for conveying the sliding sledge loading a scraped car to one of the roller beds, and the line mover on the rail on the other side of the disassembly station is use for receiving and sending the empty sliding sledge returned by each of the roller beds. Therefore, the sliding sledges can be recycled for continuously disassembling the car and quickly and orderly conveying the car, so that the car disassembly recycle rate is improved and the cost is lowered.