Before the formation of intracranial hematoma, the patient’s symptoms may be mild and he may even live a normal working life. The appearance is not easily detectable. Once the hematoma is formed, it leads to increased intracranial pressure, which compresses the brain tissue and pulls on the cranial nerves, resulting in headache, vomiting, and even impaired consciousness. Severe incontinence may occur, and more serious brain herniation may be formed, and changes in vital signs may occur, i.e., changes in body temperature, slow pulse, changes in respiration, elevated blood pressure, and even sensory-motor dysfunction of the limbs. Doctors have to take urgent measures, if they do not take measures to let it develop, it can appear hemiplegia, coma, or even death.