Leukemia M2 still has hope for survival once it relapses. Leukemia M2 is acute myeloid leukemia type m2, how long the survival period after relapse can not be generalized, the specific survival time according to the medical history, clinical staging, pathological typing, their own conditions, etc. Comprehensive judgment, it is recommended to standardize systematic treatment. 1. Leukemia relapse refers to leukemia cells found outside the peripheral blood marrow after complete remission of acute leukemia, or more than 5% of primitive cells in the bone marrow (except for bone marrow regeneration after consolidation chemotherapy, etc.). Acute leukemia relapse may occur due to the residual presence of microscopic lesions, genetic chromosomal variants, and the presence of an extramedullary barrier. The preferred option for acute leukemia relapse is bone marrow transplantation. 2. Generally speaking, the treatment of acute leukemia relapse is more complicated and difficult than that of the initial treatment, but it is still possible to achieve complete remission or even long-term disease-free survival after active comprehensive treatment. For relapsed leukemia, new regimens of chemotherapy with increased doses or without cross-resistance are often used, combined with targeted therapy and immunotherapy for the chance of allogeneic hematopoietic stem cell transplantation. Drugs include hypertriglyceride, vinpocetine, azacitidine and so on. It is recommended that patients go to the hospital in a timely manner and be treated under the guidance of a physician, so as not to delay the disease.