Low platelets in children may be related to blood diseases, infections, immune thrombocytopenic purpura and other factors, which are analyzed as follows: 1. Blood diseases: low platelets in children may be related to blood diseases, such as leukemia, lymphoma and other factors. 2. Infection: when children are infected by bacteria or viruses, it will also lead to temporary reduction of platelets, which will be recovered naturally after the infection is controlled. 3. Immune thrombocytopenic purpura: immune thrombocytopenic purpura in children is a relatively rare condition, which is related to factors such as excessive platelet reduction and decreased platelet production. Children with low platelets may also be related to other diseases, it is recommended to go to the hospital in a timely manner to conduct relevant examinations to clarify the cause of the disease and actively treat the symptoms.