Due to the low incidence of cranial tumors, many people don’t know much about brain tumors and are very scared once they have one. It is even more frightening to hear the doctor say that craniotomy is needed. Craniotomy = opening up the entire skull, is this a correct understanding? At present, craniotomy is still the most important and effective way to treat brain tumors. However, craniotomy ≠ “uncovering” Intracranial tumors can occur in different parts of the skull, some in the forehead, some in the back of the occipital region, some on the left side of the head, some on the right side of the head, some on the top of the head, some at the base of the skull, and some basically in the middle part, so the doctor will design different incisions according to the location of the brain tumor to open up the corresponding part of the skull. Therefore, the doctor will design different incisions according to the location of the brain tumor and open the corresponding part of the skull. The size of the skull to be opened varies according to the size and depth of the tumor, ranging from two to three centimeters for small tumors to seven to eight centimeters or more for large tumors, but the entire skull is never uncovered. In other words, if the problem can be solved with a small incision and bone flap, a large one is not necessary, but the incision and bone flap should not be infinitely small, because that would cause great difficulty in intracranial manipulation, thus increasing the risk of surgery. In short, the removal of a brain tumor from any part of the body basically involves the opening of the corresponding part of the skull, and this part of the skull has to be well repositioned after the removal of the tumor, unless there are special circumstances. At the end of the surgery, of course, the incised scalp has to be stitched up. Therefore, after the craniotomy, the patient’s head is only a sutured surgical incision. Nowadays, the surgical access has become more mature, together with the advancement of microscopic neurosurgery techniques and the application of many advanced surgical equipments, the trauma of the surgery has become less and less, and the risk of craniotomy surgery has become less, so the patients who need to undergo craniotomy surgery do not have to worry too much.