The probability of sequelae of craniotomy is about 3%-5%, however, any craniotomy has certain condition factors, such as traumatic brain injury, vascular disease, brain tumor, etc. If the sequelae have been caused by these diseases before, craniotomy cannot completely cure them, but only reduce the further development in the later stage, so this point must be clear. There may also be certain sequelae after craniotomy, the most common of which are headache and dizziness, which may be cured by regular treatment later on, including drugs and even hyperbaric oxygen, and are not particularly serious. In addition, there are also numbness and weakness of the limbs and speech dysfunction, which are often related to the location of the lesion and do not occur in all people. The occurrence of epilepsy may exist in the general population after craniotomy, so it is important to take oral antiepileptic drugs for a period of time after surgery to reduce the occurrence of epileptic sequelae.