High platelet level in babies is usually caused by inflammatory response, iron deficiency anemia or blood system diseases, it is recommended to consult a professional doctor and timely treatment. Common causes 1, inflammatory response: mostly caused by infections, such as respiratory tract infections, gastrointestinal tract infections, etc. Inflammation stimulates the body’s immune response, accelerates the metabolism, which can cause platelet levels to rise, accompanied by inflammation indexes; 2, iron-deficiency anemia: including the insufficient intake of iron or absorption disorders, which is often manifested as dizziness, headache, stunted growth and mental retardation, etc.; 3, hematologic disorders: such as the true erythrocytosis Diseases of the blood system: such as true erythrocytosis, which usually manifests as itching of the skin, pain at the end of the limbs, and even skin ecchymosis and bleeding symptoms of the gums, accompanied by an increase in platelets. In addition, chronic myeloid leukemia and primary thrombocythemia can lead to increased platelets. Treatment 1, supplementation: supplement the missing trace elements through diet, supplement iron, eat more vegetables, fruits, supplement vitamin A, vitamin C, etc.; 2, medication: it is recommended to follow the doctor’s instructions to use medication, such as infection caused by inflammation, antibiotics, antiviral drugs can be used, such as cefixime, acyclovir. If thrombocytosis is caused by blood system diseases, systematic treatment is needed. Precautions daily more attention to the baby, once the abnormal situation, such as headache, vomiting, diarrhea, etc., it is recommended to consult a doctor in a timely manner, and remember not to arbitrarily use drugs.