Most of the microscopic pathological findings of small hepatocellular carcinoma are hepatocellular carcinoma, which may also be cholangiocellular carcinoma, and a few of them are mixed cell hepatocellular carcinoma. Small hepatocellular carcinoma refers to the maximum diameter of a single cancer nodule is less than 3cm, or the maximum diameter of the total of two cancerous nodules is less than 3cm, and its microscopic typing is as follows: 1. Hepatocellular carcinoma: originated from hepatocytes, the higher the degree of differentiation, the more similar it is to hepatocytes, with similar function, which can secrete bile; the arrangement of cancer cells is nest-like, with different shapes and sizes of cancer cells, and the degree of malignancy is high. 2. Cholangiocellular carcinoma: originated from epithelial cells of intrahepatic bile ducts, with morphology similar to normal bile duct cells, arranged in the form of glandular ducts, and with more interstitial tissue between cancer cells. 3. Mixed cell hepatocellular carcinoma: the least common type, originated from the above two types of tissue cells. Small hepatocellular carcinoma should be detected and treated early, and the survival rate of patients can be effectively improved if they insist on regular review after operation, so do not be negligent to avoid delaying the condition.