Craniotomy is dangerous, but nowadays craniotomy technology is more mature, generally do not need to worry too much. Craniotomy is usually performed for intracranial lesions, such as brain tumors, brain hemorrhage, hydrocephalus, etc. Craniotomy is usually performed by cutting a certain size of the skull, not the entire skull, and the surgery is performed under general anesthesia, which is usually painless during the surgery. The operation is performed under general anesthesia, and there is usually no pain during the operation. After the operation, as the incision is not large, the recovery is relatively good. At present, craniotomy technology is more mature, surgical instruments and equipment are very advanced, patients do not need to worry too much. However, as long as it is a surgery, there is a certain degree of risk. After surgery, patients should cooperate with the doctor to actively carry out wound care and follow-up treatment to promote the recovery of the disease.