Hydrocephalus after cerebral infarction cannot be completely cured, but can only be improved through medication and surgery to alleviate clinical symptoms. Hydrocephalus after cerebral infarction is mostly caused by the blockage of cerebrospinal fluid pathway and poor absorption of cerebrospinal fluid. Chronic hydrocephalus patients may show intermittent dizziness, head swelling, headache, vision loss, weakness of both lower limbs, urinary incontinence, and even intellectual disability. In the early stage, diuretics can be given, such as dihydroclonidine, tachycardia orally, and mannitol can be given at rest. If the cerebrospinal fluid is still relatively large and cannot be improved by means of oral medication, surgical treatment can also be chosen to improve the patient’s clinical symptoms.