Vaccination with the NeoCrown vaccine does not induce leukemia. The vaccine can stimulate the body to produce corresponding antibodies, which can effectively resist the invasion of the new crown virus and prevent the onset of new crown pneumonia; while leukemia, known as blood cancer, is a malignant tumor disease originating from the blood system, which can seriously endanger the health of individuals as well as the safety of their lives. The cause of leukemia, a malignant neoplastic disease, is not clear. Certain blood disorders and exposure to carcinogenic substances may induce leukemia, but there is no scientific evidence to suggest that vaccination against C.N.C. will induce leukemia; therefore, there is no link between vaccination against C.N.C. and the onset of leukemia. Individuals need to recognize the importance of vaccination, do not believe the rumors that the new crown vaccine can induce leukemia; if there is any abnormal physical discomfort, consult a professional physician for guidance in a timely manner. Tips] In this article, “new coronavirus pneumonia” and “new coronavirus pneumonia” have been renamed to “new coronavirus infection” on December 26, 2022, as announced by the National Health Commission.