Head impact, trauma and other localized swelling, may be subcutaneous hematoma, capitellar subperiosteal hematoma, subperiosteal hematoma. It is recommended that patients first observe the situation of the impact injury and choose the appropriate treatment measures according to their own situation, as follows. 1. Subcutaneous hematoma: The hematoma is limited and has a sense of fluctuation, and the possibility of depressed skull fracture should be ruled out through CT and other examinations. It can be relieved by ice compresses in the early stage after the injury, and changed to hot compresses after 48 hours after the injury. Generally, it can promote hematoma self-absorption. Remember not to rub the swollen area. 2. Subcapsular tendon membrane hematoma: the hematoma is soft to touch and has obvious fluctuating sensation. If the hematoma is small, pressure bandage can be applied to the head to wait for its self-absorption; if the hematoma is large and the patient’s coagulation function is normal, the patient should be strictly sterilized skin and then puncture and aspirate the hematoma, and then apply pressure bandage; if the hematoma is already infected, it is necessary to incise the scalp and drain the infected foci. 3. Subperiosteal hematoma: the hematoma is of high tension, and can be treated with pressure bandage, puncture and suction, etc. If the patient has a skull fracture, the patient can be treated with pressure bandage, puncture and suction. If the patient has skull fracture, pressure bandage is not suitable. If patients have dizziness, headache, nausea and other abnormal manifestations in addition to localized swelling, they should be alert to the existence of skull fracture or intracranial injury, and need to be diagnosed promptly by head CT or X-ray, and take corresponding treatment measures.