Liver cysts 5mm need to pay attention to whether clinical symptoms occur, regular follow-up and adopt a healthy lifestyle. 1. Pay attention to whether there are clinical symptoms: patients should pay attention to whether they have abdominal pain, abdominal distension, satiety, jaundice and other clinical manifestations, because most of the hepatic cysts are benign lesions, and in principle, there is no need for treatment for those who have no symptoms or are small in size. If the size of 5mm is small, surgery should not be considered for the time being, and regular checkups should be continued. 2. Regular follow-up: asymptomatic patients can regularly improve liver function, abdominal ultrasound or abdominal CT to assess the changes of liver cysts, such as the size of the cysts, the number of cysts, and whether they are compressing the surrounding tissues. Knowing the growth rate of the cysts is also important for the choice of treatment. If the cysts are growing rapidly and gradually producing compression symptoms, surgery may be considered. Otherwise, regular follow-up is sufficient. 3. Adopt a healthy lifestyle: patients with liver cysts should pay attention to a light diet, reduce spicy and fried diet, reduce alcohol consumption and smoking, and reduce the metabolic burden on the liver.