Hepatitis B at the age of 70 cannot be cured by itself, and the prognosis is usually better for patients with mild disease, but the prognosis is worse for those with severe disease, which may develop into liver cancer. Hepatitis B is usually not self-healing regardless of age, and the common clinical hepatitis B is usually chronic hepatitis B. If the patient’s condition is relatively mild, most patients will have a better prognosis after active treatment. If the patient’s condition is relatively mild, most patients have a better prognosis after active treatment. However, the lack of timely treatment can lead to the continued development of the disease and the emergence of severe chronic hepatitis. Patients with severe hepatitis B may develop complications such as hepatic encephalopathy, hepatorenal syndrome, and upper gastrointestinal bleeding. With the prolongation of the disease, about 8% of patients will develop cirrhosis within 5 years, and some patients may also develop liver cancer, thus the prognosis is poor. Therefore, Hepatitis B patients need timely medication, general measures, etc. under the guidance of a doctor, and if the disease progresses to end-stage cirrhosis, resulting in liver failure, liver transplantation is also required. It is recommended that 70-year-old patients with hepatitis B should strictly follow the doctor’s instructions to take reasonable treatment measures as soon as possible and take good care of themselves so as not to aggravate their condition.