A coma score of 4 is a deep coma with a slim chance of waking up. A comatose patient uses a Glass score of 4, which suggests deep coma. This is usually characterized by fixed bilateral pupil dilation and loss of light reflex. The advanced stage of brain hernia formation is often accompanied by unstable vital signs, and even with aggressive craniotomy treatment, removal of intracerebral hematoma and corresponding treatment such as debridement decompression, the patient may still die within a short period of time, and the chances of waking up are slim. Deep coma, critical condition, extremely poor therapeutic effect, life-threatening at any time, it is recommended to seek medical attention in a timely manner in order to save the patient’s life.