How long can you live with a liver cyst of 5mm is mainly related to lifestyle habits and so on, and generally does not have a major impact on life expectancy. Liver cysts belong to a benign liver disease, most of them are caused by incomplete or abnormal development of bile ducts during embryonic period, and another small part may be caused by incomplete recovery after liver injury or inflammation. When the liver cyst is less than 5cm, it usually will not cause any harm to the liver and will not affect the liver function, and even the human body will not show any abnormalities, so it usually does not need to be treated, but it needs to be reviewed regularly to observe the development of liver cyst in time. If the patient has long-term smoking and drinking and other bad habits or combined with serious underlying diseases, it may cause the life expectancy to be reduced. When liver cysts grow to be larger than 5cm, some patients may experience abdominal pain and bloating after meals, and may show abnormal liver function, abdominal organ compression symptoms, and even risk complications such as liver failure, cyst infection, rupture and bleeding. Liver cysts larger than 5 cm and accompanied by other symptoms often need to be treated by surgical methods, and clinically most of them are treated by hepatic cyst openings and de-topping drainage or partial hepatectomy. Puncture and drainage alone or injection of anhydrous alcohol or sclerosing agent into the cyst have a greater possibility of recurrence and are generally not recommended. If good lifestyle habits and regular checkups are maintained after treatment, there is no major impact on life expectancy. Therefore, when suffering from smaller liver cysts, you should try to consume a diet rich in high quality protein and fiber, drink less alcohol, avoid spicy and stimulating, fried foods, combine work and rest, take moderate rest to prevent further damage to the liver, and have regular checkups. When suffering from larger liver cysts, in addition to the above precautions in life, you should also go to the hospital for examination and treatment in a timely manner and actively cooperate with the diagnosis and treatment in order to prolong the survival period.