Local swelling caused by fresh injury is usually due to the rupture of capillaries and bleeding resulting in swelling, you can generally use an ice pack or something easy to cool, such as pediatric fever patch local external application, can have the effect of reducing swelling. If the local swelling occurs 24 hours after the injury, the swelling can be reduced with a warm water bag or the use of salt bags, hot towels applied externally, which can promote local blood circulation, thereby accelerating the local swelling. In addition, the warming paste can also be used, but pay attention to avoid burning the skin. If it is a bruise injury, you can also use traditional Chinese medicine, commonly used are rhubarb, Tian Qi, Scutellaria, Phellodendron and other Chinese herbs applied externally, usually powdered, mixed with honey and then applied externally, can have the effect of activating blood circulation, dispersing blood stasis, reducing swelling and relieving pain.