Injury swelling wants to quickly reduce swelling, the first time should be cold compresses, including the application of ice or cold water at a relatively low temperature, for local repeated cold compresses, can reduce capillary rupture bleeding, reduce local swelling. After 24 hours, you can also apply hot compresses, by accelerating local blood circulation, can play a blood circulation, reduce blood stasis, swelling and pain relief effect. In addition, for more serious injuries or bruises, hematomas, magnesium sulfate can also be used 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.