Liver cancer is not contagious, that’s for sure. If liver cancer could be contagious, clinicians would have the tendency to be infected if they come in contact with many liver cancer patients a day. Therefore, we should not worry that liver cancer is contagious. Although liver cancer has a genetic factor, not all offspring will develop liver cancer. Liver cancer is not a hereditary disease, but it has a certain family tendency and is related to the family’s living and eating habits. In addition, mothers who are carriers of hepatitis B or C virus may easily transmit the virus to their children during the birth of their babies, making them at high risk of developing liver cancer. Therefore, if you have elders with liver cancer in your family and you are worried about being hereditary, you should start to do preventive work now, such as changing your bad habits. They should avoid smoking and alcohol, stay up less, and eat less fried, smoked and pickled foods to reduce the incidence of liver cancer. Meanwhile, those who have infectious diseases such as hepatitis B and C should pay more attention to regular treatment and regular checkups.