When a patient is injured by an external force, the smashed area may become swollen and painful due to soft tissue damage to the skin. In this case, first of all, you need to check the X-ray of the injured area to observe whether there is a fracture, and if there is a fracture, you need to treat it accordingly. If the swelling is only caused by soft tissue injury of the skin, within 24 hours of injury, you can apply ice packs for cold compresses, the application of cold ice packs can reduce inflammatory exudation, thus playing a role in reducing swelling and pain. More than 24 hours after the trauma, you can apply hot compresses or take some blood-stasis activating drugs, such as Panax notoginseng injury tablets and Chinese bruising pills, which can relieve the swelling and pain caused by trauma. In addition, if the wound has a rupture and bleeding, you also need to disinfect with iodine volts, and timely dressing, and regular disinfection of the wound to change the medicine to avoid wound infection.