Liver cancer is the third most common malignant tumor with the highest mortality rate after gastric cancer and esophageal cancer. The early symptoms are not obvious, and the late stage mainly manifests as liver pain, fatigue, weight loss, jaundice, ascites and other symptoms. Clinically, Western medicine surgery, radiotherapy and chemotherapy combined with traditional Chinese medicine are generally used for treatment, but the cure rate of patients in the late stage is low due to the spread of cancer cells. Therefore, early detection, early diagnosis and early treatment of liver cancer are necessary. We should do a good job in liver cancer prevention and adhere to the seven-character liver cancer prevention policy of managing water, managing food and preventing hepatitis.