The phenomenon of increased leukocytes in children with colds may be caused by the following factors: 1, the child’s cold is caused by bacterial infection, leukocytosis is an important indicator of bacterial infection, this situation can be treated by taking amoxicillin granules. 2, the child’s cold may be due to viral infections, combined with bacterial infections, so the phenomenon of leukocytosis. 3, the child’s cold may be caused by the phenomenon of leukocytosis. It is also possible that the phenomenon of leukocytosis is caused by the immune response of the child’s immune system as a result of the child’s cold, which is a normal phenomenon. When a child has a cold with leukocytosis, he should be treated with antibiotics in a timely manner to avoid continued bacterial infections, which can be treated clinically with cephalosporin antibiotics such as cefixime pellets.