The cerebellum is located at the back of the head, where there is a distinctive bony protrusion called the occipital tuberosity, and the cerebellum is located on the inside of the head. The main function of the cerebellum is to manage balance. Patients with cerebellar damage often experience dizziness and unsteady walking. The location of the cerebellum in the skull is in the posterior cranial recess, at the back of the brainstem. Because it is closely connected to the brainstem, cerebellar diseases often involve the brainstem, which is the life center of the human body, and the centers of respiration and heartbeat are located in the brainstem, and once damaged, it may lead to respiratory and circulatory failure, or even respiratory and cardiac arrest. Therefore, the back of the occipital region is a very dangerous part of the body, sometimes hit by a fist or fall, may have life-threatening injuries, be careful to protect.