For patients who have been diagnosed with liver cancer, tertiary prevention is needed, which mainly includes anti-hepatitis B virus, hepatitis C virus and other etiologic treatments, adopting comprehensive measures that can reduce the recurrence of primary liver cancer, lower the death rate and improve the survival rate, and monitoring the recurrence and metastasis of liver cancer. 1. Anti-hepatitis virus (Hepatitis B virus, Hepatitis C virus) treatment: For patients with Hepatitis B and Hepatitis C, effective anti-hepatitis virus treatment is needed to prevent recurrence, such as entecavir and interferon. 2. Adopt comprehensive measures that can reduce the recurrence of liver cancer, lower the death rate and improve the survival rate: for patients with impaired liver function, they need to be combined with liver-protecting and liver-protecting drugs, such as glycyrrhizin. Molecular targeted therapy, such as sorafenib, should be carried out as early as possible, mainly based on the principle of prolonging survival. And then make some improvements in daily life and diet, life should pay attention to reasonable rest and ensure enough sleep; diet should be light and nutritious as the principle to ensure enough physical strength. Liver cancer is partly caused by carcinogens such as aflatoxin, which should be kept away from disease-causing factors as soon as possible. 3. Monitor recurrence and metastasis of liver cancer: During this period, close monitoring of the disease and regular rechecks are needed to know whether there is any metastasis or recurrence of the disease, and then treat the disease according to the diagnosis results. In order to prevent liver cancer from recurring again, regular observation should also be made, and if symptoms such as pain in liver area and yellowish color appear, one should consult doctor in time.