The length of survival of hydrocephalus is highly dependent on the type and severity of hydrocephalus, and cannot be generalized. With regular and aggressive treatment, hydrocephalus can be completely survived for a long time. Hydrocephalus is prone to occur at any age and is most often seen in various intracranial infections, brain tumors, and cranial trauma to the point of impaired absorption, impaired circulation, or excessive secretion of cerebrospinal fluid. In general, it can be classified into two types of hydrocephalus, traffic hydrocephalus and obstructive hydrocephalus, based on cerebrospinal fluid dynamics. The typical symptoms are headache, nausea and vomiting, weakness of lower limbs, unstable starting or gait standing, urinary incontinence, and unresponsiveness. The current treatment for hydrocephalus is mainly surgical treatment, supplemented by medication or other treatments. If the patient’s condition is relatively mild, it can often be cured and will not affect the patient’s normal life expectancy. However, if the condition is severe, as in the case of hydrocephalus caused by intracranial malignant tumors, the prognosis is usually poor. In conclusion, hydrocephalus is not an isolated disease, and the exact length of life after the disease varies from person to person, but the key to treating hydrocephalus is to clarify the specific cause and remove the primary disease.