Liver cancer is a malignant tumor that has no tendency to be contagious. However, viral hepatitis, which can be contagious, can lead to an elevated risk of liver cancer. Hepatocellular carcinoma is a malignant tumor of hepatocellular origin, and currently the most common cause in China is cirrhosis of the liver triggered by hepatitis B. In addition cholestasis, long-term alcohol abuse and aflatoxin are also high risk factors for liver cancer. However, liver cancer as a malignant tumor is not contagious to others. If the patient’s liver cancer develops from viral hepatitis, hepatitis viruses can be transmitted through various ways, for example, hepatitis B virus and hepatitis C virus can be transmitted through blood, mother-child and sexual contact, etc. People who are infected are prone to develop chronic hepatitis, which greatly increases their risk of developing liver cirrhosis or liver cancer.