External hydrocephalus in infants can mostly be cured by itself, but if external hydrocephalus is caused by other diseases, the primary disease needs to be treated actively. Infantile external hydrocephalus is a benign self-limiting disease that occurs in infancy and belongs to traffic hydrocephalus, which is categorized into primary and secondary hydrocephalus according to different causes. Primary external hydrocephalus can mostly be cured by itself, and regular checkups are enough without special treatment. However, if the external hydrocephalus is caused by other neurological diseases, it is recommended to treat it promptly. If an infant shows signs of hydrocephalus (e.g. full fontanel, feeding difficulties, rapid growth of head circumference, etc.), it is recommended to go to the hospital to identify the cause of the disease and treat it in time to avoid delaying the disease.