Children with low platelets and high white blood cell counts may be due to infectious purpura, acute leukemia and other conditions, which need to be treated by medication, chemotherapy, bone marrow transplantation and other means under the guidance of a doctor. 1. Infectious purpura: When a child develops an acute bacterial infection, the number of white blood cells in the body will increase, and the platelets in the body may decrease in number due to the immune response. Antibiotics can be used under the guidance of the doctor for treatment, such as ciprofloxacin extended-release tablets, cefadroxil capsules, and so on. 2. Acute leukemia: the leukemia cells in the patient’s body will proliferate in the bone marrow and be released to the peripheral blood, at this time, the normal hematopoietic function will be affected, and low platelets and high white blood cell counts may occur. Common treatments for acute leukemia are chemotherapy to inactivate the leukemia cells in the patient’s body, and bone marrow transplantation can also be considered if there is a suitable bone marrow match. During the treatment period, the child needs to be rechecked regularly to observe the platelet and white blood cell counts in the body, so that the doctor can formulate a treatment plan.