Polycystic liver left unchecked can eventually cause severe damage to liver function. Polycystic liver is a congenital disease, hereditary and family history, often with polycystic kidney. The size of polycystic liver varies, small only microscopically visible, but the growth is slow, clinical symptoms are not obvious, generally does not affect liver function, no treatment, regular observation can be. The size of polycystic liver can be up to several tens of centimeters, which will cause compression symptoms, combined with bleeding and infection. Therefore, for those with fast growth rate and large volume, clinical treatments such as puncture and drainage, open window decompression, partial hepatectomy, etc. are needed due to the corresponding compression symptoms or bleeding and infection, so as not to cause damage to liver function. Although there is no need to treat polycystic liver in the early stage, it should not be taken care of, and it is recommended to follow up regularly under the guidance of the doctor, so as to avoid the gradual increase of cysts to damage the liver function.