After the bump can be local tissue cold compresses within 24 hours, with cold water-soaked towels, medical ice bags or wrapped in a towel for cold compresses, do not put ice directly on the wound. The local cooling is conducive to the contraction of damaged blood vessels, which accelerate the contraction of blood vessels to reduce the degree of subcutaneous bruising at the injury, which can effectively control the swelling of the injured area, congestion aggravation. 24 hours later, you can use hot compresses to accelerate the absorption of local bruising, metabolism, but also with the use of medicinal wine, safflower oil and other drugs repeatedly massage, rubbing, can accelerate the dispersion of bruising. If the swelling is serious, it is recommended to go to the hospital in time to check if the joint and bone are injured.