China is a country with a large number of hepatitis B virus infection, reportedly 120 million hepatitis B virus carriers, now suffering from hepatitis patients are 30 million people, liver cancer every year by the lives of as many as 300,000 patients, alarming, the prevention of liver cancer can not wait! The development of hepatitis B, cirrhosis and liver cancer is mostly caused by the patients themselves, who did not listen to the doctors’ advice and neglected to treat the disease. The reason from the patient, which contains chronic HBV carriers and patients with existing hepatitis lack of awareness of the possible adverse outcomes of their disease, neglecting systematic examination and standardized treatment. There are even those who seek medical treatment indiscriminately and are fooled by bad advertisements, taking a lot of detours, spending a lot of money and delaying the best time for treatment. Of course, we do not exclude patients who cannot afford treatment due to financial difficulties. Some of these patients never had any examination at first and were unaware of it until their liver became cancerous. Some of these patients have never had any examination at first and are unaware of it until the liver becomes cancerous. Some of them have mild disease and usually have no obvious discomfort, so they often neglect regular examination and standardized medication, so that the hepatitis develops into cirrhosis or even liver cancer unknowingly, and it is too late to regret. “Once cancer develops, the course of life will become countless, which will have negative impact on family and society. As a doctor, it is the responsibility and obligation to inform patients to fully understand their own condition, have a macroscopic dynamic grasp of themselves, establish the scientific concept of “prevention before illness, prevention after illness”, achieve regular checkups and standardize medication (liver protection, liver protection, anti-virus, anti-fibrosis, etc.). It is especially important for those who have family history of liver cancer, and ultrasound images suggest multiple small nodules on the surface of liver and hepatic tissue heterogeneity, which I call “precancerous lesions” with a cancer rate of about 15%-20%. Patients are advised to strive to have ultrasound examination every 2-3 months, liver function and alpha-fetoprotein test once a month, and once suspicious lesions are found, CT intensive examination should be implemented as early as possible to achieve early detection, early diagnosis and early treatment. Especially, CT or ultrasound examination is more worrying when large nodules are found in the right posterior lobe of liver, because this area is a good site for liver cancer. This can stop the occurrence of liver cancer before it sprouts and effectively achieve the purpose of planning ahead and preventing it before it happens. In addition, patients should also develop good habits and lifestyle, have a regular life and get up, take a walk in the early morning to breathe fresh air and improve the oxygen supply to the liver. Before going to bed, take a footbath to improve the blood supply to the liver, which is beneficial to the metabolism of liver cells. Do not eat fatty food, but light, easy to digest, green food, do not eat moldy and spoiled food, quit smoking and drinking, be open-minded and unpretentious, and abstain from sex. For patients with hepatitis B who are engaged in physical work, it is more important to avoid excessive physical exertion and maintain sufficient resistance to disease. For patients with more liver nodules, early application of Chinese herbal medicine against liver fibrosis will definitely achieve the desired effect. Using a combination of Chinese and Western medicine to fight against virus and liver fibrosis is a two-pronged approach that complements each other and can achieve complementary advantages. At present, it is known that Chinese herbal medicines such as Astragalus, Radix Codonopsis, Ganoderma lucidum, Flea Huo, Curcuma longa and Gecko have the effect of regulating the immunity of the body and anti-cancer. They are worthy to be used by clinicians for reference. In conclusion, prevention of liver cancer is more significant than cure, because liver cancer is difficult to be cured and can only extend the survival time of patients to a limited extent. According to incomplete statistics, the five-year survival rate of primary liver cancer patients in China is less than 5% (including those who have undergone liver lobectomy, liver transplantation, interventional embolization and radiofrequency ablation). Chinese medicine has long discussed the prevention of disease: not to treat the disease (disease) to treat the disease, not to treat the chaos (riot) to treat the chaos …… disease has been achieved after the medicine, chaos has been achieved after the treatment, such as thirst and wear well (drilling wells), fighting (war) and casting soldiers (weapons), is not also late! This is the truth. I fully believe that if hepatitis B patients can follow the above requirements, they will be able to reduce the incidence of liver cancer and improve their quality of life.