The practice after a head bump is judged by the patient’s performance, how big the mass is, whether there is any fluctuating sensation by pressure, whether there is nausea and vomiting at the time of injury, whether there is headache and dizziness, whether there is blurred vision, whether there is transient disorder of consciousness, whether there is accompanying head and facial numbness, limb weakness, limb twitching, etc. It is best to go to the local hospital for a cranial CT examination to find out if there is any cerebral contusion, intracranial hemorrhage, subdural or epidural hemorrhage. If there is no cerebral contusion or intracranial hemorrhage, simple scalp hematoma can be iced in the early stage and local heat can be applied after 72 hours.