If the bruise is not large, cold compresses can be applied within the first two days after the bruise, which can reduce the local subcutaneous oozing of blood and tissue edema, and then the swelling can be reduced. After two days, localized hot compresses can promote the absorption of hematoma and edema, so that the local swelling can subside as soon as possible, and at the same time can reduce pain. If time and economic conditions allow, local physical therapy can be done, which also helps to reduce swelling. However, if the swelling is more serious, or if there is obvious throbbing pain, or if the swelling is very extensive, it is necessary to go to the hospital for treatment by a surgeon in a timely manner, and if necessary, further puncture is needed to allow the fluid in the swelling to be pumped out. The diet also needs to be adjusted after swelling, for example, do not eat too spicy food, do not drink alcoholic beverages, and consume more vitamin and fiber-rich foods such as fruits and green vegetables as appropriate, all of which can help reduce swelling.