Leukemia patients who have been clinically cured for ten years and have fully recovered can receive the new crown vaccine. If a leukemia patient has been clinically cured after systematic and regular treatment, and has stopped using all medications, this type of patient can be considered for the new crown vaccine. However, if the leukemia patient has not reached the standard of clinical cure, or is still taking oral medication, or is taking oral immunosuppressant after bone marrow transplantation, this kind of patient is not suitable for the new crown vaccine. Patients with a history of leukemia should be very careful if they want to receive the new crown vaccine, and it is recommended to do so under the guidance of a specialist. Otherwise, it may induce relapse or aggravation of the original disease.