How long a person typically lives after a craniotomy is analyzed based on the disease and severity of the condition the patient is suffering from, as well as the patient’s own condition. 1. If the body suffers from benign tumors, the operation is more successful after craniotomy, and the individual’s physical condition recovers better, then the natural life span can be reached. However, if the tumor is malignant and the degree of malignancy of the tumor is relatively high, the patient may not be able to maintain a normal life in 1~2 months after craniotomy. 2. In case of cerebral hemorrhage, through craniotomy, a more ideal treatment can be achieved and the patient can recover a better quality of life. However, if it is a brain stem hemorrhage, it will be more difficult to maintain life, and some patients may become vegetative, and the survival time will be shorter. 3. In case of craniocerebral trauma, it is only an epidural hematoma, the condition is not particularly serious, and the whole body is in a better condition after the craniotomy, so the patient can usually reach a natural life span. However, in the case of extra-heavy craniocerebral injury, it may not be possible to protect the patient’s life even after craniotomy. When patients undergo craniotomy, they need to choose it in accordance with their individual physical fitness as well as their condition. After the surgery, it is also necessary to observe the body’s condition more often, and in case of any abnormalities, the family needs to communicate with the doctor in time.