The impact on the head to determine whether there is no problem is mainly based on the symptoms. If the symptoms are not heavy after the impact, only a slight headache and dizziness, there is generally no big problem. It is mainly due to the vibration of the brain tissue caused by the impact, and it will recover after a few days of good rest. If the head is hit after the symptoms are heavy, such as severe headache, frequent nausea, vomiting or coma, is very serious, generally consider the presence of intracranial hemorrhage or brain tissue contusion and skull fracture, this situation requires a cranial CT examination as soon as possible to determine the diagnosis. The CT examination can detect contusions and bleeding in the brain tissue, and the corresponding treatment should be carried out according to the examination results, and surgery is needed to remove the hematoma if the bleeding volume is large. If the hemorrhage is large, surgery is required to remove the hematoma. If the hemorrhage is not large, treatment with decongestant and neurotropic drugs can promote recovery.