Liver cancer can be divided into mass type, nodular type, diffuse type and small cancer type according to the size of liver. The most common type of mass type is the giant type with cancer masses more than 5cm in diameter and more than 10cm. It can be formed into single or multiple fused masses, mostly round, swelling growth, with small lesions at the long edge, prone to cancer rupture and bleeding. Nodular type is also very common, the size of cancer nodules varies in number, the largest diameter does not exceed 5 cm, the boundary with the surrounding area is not as clear as that of masses, often accompanied by cirrhosis. If the cancer nodules are <2cm, they are microscopic, 2-5cm are small liver cancer, 5-10cm are large liver cancer, and 10cm or more are giant liver cancer.