There are individual differences in how long you can live with leukemia at age 70, ranging from 1 week to more than 10 years. Age is an important prognostic factor for leukemia, and remission rates and survival can be shortened with age. Elderly leukemia has a poorer prognosis, with a higher early mortality rate and a lower complete remission rate compared to leukemia in younger people. 1. The complete remission rate of acute leukemia in the elderly is significantly lower than that of young adults. Acute leukemia in the elderly can be life-threatening due to severe anemia and infection, with a short-term mortality rate of 19.2%. 2. Chronic myeloid leukemia in the elderly has a poor prognosis, with a median survival of 39-47 months after treatment. Chronic lymphocytic leukemia varies greatly among individuals, with an average disease duration of 3~4 years, or up to 10 years or more. Elderly patients with leukemia can delay diagnosis and early treatment because of atypical symptoms, and because of poor general condition, poorer function of organs, or chronic diseases, physiological or psychological status, etc. than young people and children, so it is more difficult to treat, and it is necessary to give treatment under the guidance of a physician in a timely manner.