Acute lymphoid leukemia in children, known as childhood acute lymphoid leukemia, may recur after regular treatment. For example, if the immune system is weak or infected by bacteria or viruses, the disease may recur. Acute lymphoid leukemia in children is a very serious blood disease. When the disease is first diagnosed, it is differentiated according to the level of risk, which is generally categorized as low risk, medium risk and high risk. The higher the risk level, the more likely it is to recur. In addition, the disease may recur if the immune system is lowered due to a lack of a regular diet and routine, or if the patient is infected by bacteria or viruses. Children with acute lymphoblastic leukemia should eat more high protein and dietary fiber-rich foods, and do outdoor exercise to strengthen their resistance. They should also pay attention to hygiene and good protection to avoid bacterial infection. If there are symptoms of relapse, you need to consult a doctor in time, under the guidance of the doctor’s treatment.