How long an adult can live with acute leukemia depends on the severity of the disease, treatment effect and economic conditions, usually ranging from a few years to decades. 1. If the patient has severe acute leukemia with a series of complications such as serious infection, the survival time may be shortened, usually around 3 years, or even life-threatening within a few months, but if the patient’s disease is less severe and the patient recovers well after the operation, he/she can survive for more than 10 years. 2. If the patient’s physical condition is better and suitable surgical plan such as bone marrow transplant, radiotherapy, etc. is adopted, the survival time of the patient can be greatly extended, and may even reach several decades, but if the patient’s physical condition is weaker, and the patient can’t recover well after the operation, the survival time will be shortened accordingly. 3. If the patient’s financial condition is better, adequate postoperative care can be given and the life expectancy will be extended, but if the economy is restricted and the postoperative care is not proper, the life expectancy will be reduced, usually around 2~3 years. Treatment of specific diseases should be carried out under the guidance of physicians.