Leukemia is detected after the new crown vaccine. Once leukemia is diagnosed, standardized treatment should be carried out immediately. 1. At present, there is no conclusive evidence to prove that the New Crown vaccine induces leukemia. If leukemia is detected after vaccination with New Crown Vaccine, the patient should go to a hematology specialist for relevant examinations, such as bone marrow aspiration, cytochemical staining, immunological tests, chromosome tests, etc., for the diagnosis and differential diagnosis of leukemia, and at the same time need to clarify the type of leukemia. 2. Different types of leukemia have different treatment plans and prognosis. Generally speaking, they include supportive therapy, prevention and treatment of infection (levofloxacin) and bleeding (aminoglycoside), combination chemotherapy (cytarabine, zorubicin), molecular targeted therapy (imatinib), etc. Among the different types of leukemia, the combination chemotherapy program and molecular targeted therapy drugs are different. It is recommended to go to the regular hospital in time, under the guidance of specialists for standardized treatment.