A father who has liver cancer will not necessarily pass it on to his children. Like other cancers, liver cancer does have some relationship with genetic inheritance. People who have liver cancer patients in their immediate family, that is, those with a family history of tumors, will have a significantly higher risk of developing liver cancer than those who do not have liver cancer patients. However, the development of cancer is not caused by a single factor, but by a combination of endogenous factors such as genetic background, genetic mutation, and exogenous factors such as viral infection, ionizing radiation, and chemical toxins. In real life, it is often seen that not all people with family history of liver cancer will eventually get liver cancer, but many people without family history of liver cancer do. Therefore, it is important to prevent liver cancer by doing primary prevention, that is, preventing exposure to currently known causes that may lead to liver cancer, especially for people with family history of liver cancer.