CT manifests as liver shadows, which can be caused by liver cysts, specifically divided into congenital liver cysts and acquired liver cysts. Congenital hepatic cysts are formed due to bile duct dilatation, and many patients have no clinical symptoms, but are found during health checkups as low-density lesions with intact envelope. Acquired hepatic cysts mainly occur in pastoralist, Qinghai and Tibetan areas, which are also caused by hepatic encapsulation disease and should be promptly treated by surgical option. In addition, there are also some patients due to hemangioma of the liver, which is also a congenital developmental abnormality. Huge hemangiomas are also prone to rupture leading to bleeding, and for lesions smaller than 5 cm, they can be followed and observed regularly, with attention to no strenuous activity; they can also be malignant tumors of the liver, which can manifest as local shadows.