After an elderly person develops hydrocephalus, he or she needs to be examined by cranial CT, cranial MRI and other examinations in a timely manner to clarify the severity of hydrocephalus, so that a treatment plan can be given, including conservative treatment and surgical treatment, as follows: I. Conservative treatment: If conservative treatment is possible, drugs such as mannitol, glycerol fructose, albumin and furosemide can be chosen for dehydration and cranial pressure lowering treatment, and Choose the method of lumbar puncture to release cerebrospinal fluid to reduce the water in the brain. Surgery: If these treatment measures still cannot improve the patient’s symptoms and the patient continues to have headache, impaired consciousness, decreased intelligence, lower limb weakness, unstable walking and other symptoms, surgery should be chosen according to the patient’s specific situation. If the patient is able to tolerate surgery, a ventriculoperitoneal shunt may be chosen to reduce the fluid in the brain. If the patient cannot tolerate surgery, a minimally invasive surgical approach can be chosen to improve the patient’s symptoms.