Hepatitis B does not necessarily lead to liver cancer. Regardless of the state of the liver after hepatitis B virus infection, there is a certain probability that liver cancer will occur. If the hepatitis B virus infects the human body and causes chronic viral carriage, the probability of liver cancer is extremely low and almost non-existent. Because the living environment around the liver cells is normal, if the degree of chronic hepatitis B is caused, there is related damage to the liver cells at this time, some liver cells will regenerate to fill the space of the damaged liver cells, there is a certain amount of liver regeneration at this time, there is liver regeneration, there may be some cancer cells appear, but the body’s immune system is generally able to deal with the cancer cells. If it progresses to the degree of cirrhosis, there will be more liver regeneration at this time, and at the same time more cancer cells will be produced. Because the environment around the liver is more occluded and the blood circulation around it is not physiological, the immune system is likely to fail to monitor it, causing some of the liver cancer cells to multiply more, thus causing liver cancer. Therefore, at the level of cirrhosis, the incidence of liver cancer will be significantly higher.