It is difficult to form liver cancer in 1 to 2 years. The formation of liver cancer is mostly a gradual evolution process, and patients need to go through this trilogy from hepatitis to cirrhosis to liver cancer, which usually takes 10 to 20 years, and how long it takes for liver cancer to develop is closely related to the patient’s condition, treatment process and treatment effect, and the degree of malignancy of liver cancer. If patients find hepatitis at early stage, pay attention to it and actively carry out treatment, their condition will be well controlled and hinder further development of the condition, and it is relatively not so easy to form cirrhosis and liver cancer. However, we cannot rule out the possibility of liver cancer in patients who have been exposed to carcinogens such as aristolochic acid and aflatoxin for 1~2 years, and this situation is more likely in patients with family history of liver cancer. Therefore, regular medical checkups are the key to early prevention and treatment of liver cancer.