Hepatocellular carcinoma is a malignant tumor disease of liver, which can be classified into early-stage, intermediate-stage and advanced-stage hepatocellular carcinoma according to the degree of development of the cancer cells. Early-stage hepatocellular carcinoma is not necessarily painless and some patients may have clinical symptoms such as abdominal pain and abdominal discomfort due to the compression of nerves by the tumor. Generally speaking, patients with early stage liver cancer are in relatively mild condition and the cancer cells have not spread widely, some of them may not even have any clinical symptoms, and abnormalities are only found during abdominal ultrasound or tumor marker examination. However, some patients with early liver cancer may have clinical symptoms such as abdominal distension, abdominal pain, right upper abdomen discomfort, etc. due to the compression of liver tissue cells or nerves by the tumor. If patients have family history of liver disease or abnormalities are found in liver examination, further examination should be conducted in time to clarify whether there is any abnormality in the body, and if there is any abnormality, it should be handled in time to avoid further development and deterioration of the condition.