Injury swelling want to quickly reduce swelling, the first time should be cold compresses, including the application of ice or cold water at a lower temperature, the local repeated cold compresses to reduce capillary rupture bleeding, reduce local swelling. 24 hours later can also apply hot compresses, by accelerating the local blood circulation, can play a blood circulation, swelling and pain relief effect. In addition, for more serious injuries or bruises, hematomas, can also apply magnesium sulfate for external application, to stop, reduce bleeding and eliminate swelling, the effect is more obvious. For the formation of larger hematoma, clinical observation is difficult to absorb the person, but also timely incision and drainage, remove hematoma, are more rapid and effective method of swelling.