There is no direct relationship between normal liver function and liver cancer, and people with normal liver function may also get liver cancer. Liver cancer is a relatively common malignant tumor of the digestive system. In the early stage of liver cancer, liver function is not affected or may be less affected and not easily detected because the human liver has a strong regenerative ability and the residual liver can maintain normal liver function as long as it is above 30%. In contrast, in the middle and late stages of liver cancer, with the diffusion and infiltration of liver lesions, liver cells are destroyed by a large number of tumor cells and liver function malfunction occurs. The specific situation needs to be clarified by ultrasound, AFP (alpha-fetoprotein), CT, MRI, liver aspiration and other examinations. In daily life, one should pay attention to routine physical examination and should not take it lightly because the liver function is normal. If liver cancer has been diagnosed, you should actively cooperate with doctors for treatment, pay attention to rest and eat reasonably.