Bleeding gums in children are not usually considered to be a precursor to leukemia. Early signs of leukemia can include bleeding, and some patients may have bleeding spots and petechiae on the mucous membranes of the skin, but often there is no obvious bleeding from the gums. Gum bleeding in children is most often considered to be due to inflammation of the gums or the development of periodontal lesions, which can occur when the gums are touched. This condition can also occur in young children whose gums are more delicate and if they brush their teeth in an incorrect position. Gum bleeding can also occur when platelets are reduced, but there are many causes of thrombocytopenia, and leukemia is only one of the less common and more serious ones, and leukemia can be accompanied by other more obvious physical discomforts, such as anemia, fever, and liver and spleen enlargement. In addition, immune thrombocytopenia and aplastic anemia can cause bleeding gums due to thrombocytopenia. When children have bleeding gums, they should go to the dentist or hematology department in a timely manner to identify the cause of the problem through blood tests and other tests, and treat it accordingly.