Stretchers are divided into lifting stretchers, wheeled stretchers, shovel stretchers and negative pressure inflatable cushion fixed stretchers. The stretcher should be selected according to the patient's situation, and it is suitable for the patient and the wounded to lie flat. Because the stretcher itself is very heavy, it is very laborious to carry. Using negative pressure inflatable cushion to fix stretcher is the best tool to transport the wounded with multiple fractures and spinal injuries. The inflatable cushion can fix the whole body of the wounded well. When in use, that air cushion is inflated and flatten, the wounded are put into the air cushion, the air in the bag is pump out, the air cushion is hardened, and the wounded are firmly fixed in the air cushion, so that the air cushion can be kept stable all the time during transportation.