The causes of small cysts in the right liver include the following: first, abnormalities of congenital development, which occur in many people and can be found during health checkups usually without symptoms. Secondly, it mainly occurs in pastoral areas, due to herdsmen’s contact with livestock, which may be infected by encrusting worms and secondary to liver encrustation, the clinical manifestation of which is liver cysts, and should be multiple cysts. Third, there are also some patients who develop local contusions of liver tissues secondary to trauma and form hematomas, which will form cystic lesions after healing, and imaging is a manifestation of cysts. For liver cysts, lesions smaller than 5 cm do not require special treatment; lesions larger than 5 cm have the possibility of rupture and can be selected for surgical removal.