It is wrong to say that leukemia in children is not something that is dragged out. The cause of leukemia is not yet completely cleared, but it is currently believed to be a multifactorial cause, such as chemical factors, genetic factors, viral infections, etc., and is not dragged out. 1. Chemical factors: such as prolonged exposure to some chemicals such as formaldehyde, etc., may make children leukemia. Prolonged exposure to X-rays can also lead to an increased incidence of leukemia. 2. Genetic factors: Although leukemia is not a hereditary disease, if there is a person with leukemia in the family, the probability of the child suffering from leukemia will increase. Some special diseases, such as Down’s syndrome, have a much higher chance of developing leukemia than normal people. 3. Viral infections: Some studies have found that human T-cell virus can cause T-lymphoblastic leukemia in adults, so some studies have speculated that leukemia in children can also be caused by this viral infection, but there is no accurate evidence to prove it. Childhood leukemia is a disease caused by a variety of factors, and children need to be protected from exposure to these harmful factors. When a child becomes unwell, he or she needs to be actively diagnosed and treated.