Negative pressure suction therapy (VSD) refers to the use of negative pressure closed drainage techniques to promote wound healing. Negative pressure closure drainage technique refers to the sterile material to cover the wound, to ensure that the range beyond the edge of the wound, at the same time in the foam material and the wound between the placement of a number of side-hole drainage tubes, the outermost layer and then covered with a layer of well-closed viscous film, connected to the negative pressure suction source, can form a closed negative pressure system, so that the negative pressure in all parts of the sub-even, the whole of the wound have drainage and closure effect. VSD can rapidly remove the exudate and prevent the body from absorbing minus toxins, and at the same time, it can form a squeezing effect on the wound, eliminate the excess cavity, accelerate the local blood circulation, and accelerate the healing of the wound. In addition, the wound is in a closed state, maximizing the avoidance of nosocomial cross-infection. For the trauma is dense muscle, fascia, you should choose a higher negative pressure setting. It is recommended that patients go to regular hospitals for treatment so that the wounds can heal soon.