There are many reasons for low eosinophil percentage, which may be caused by typhoid fever, scarlet fever, blood system diseases, etc. Different causes lead to different treatments, so it is recommended to choose appropriate treatments, such as daily life care and medication, under the judgment of the doctor. 1. Typhoid fever: Typhoid fever may lead to low eosinophil percentage, mainly treating typhoid fever to alleviate low eosinophil percentage, suggesting the use of drugs such as benzylpenicillin as prescribed by the doctor, and also the use of peritoneal or hemodialysis to remove azotemia, to alleviate the symptoms of the patient. 2. Scarlet fever: low eosinophilic percentage may be caused by scarlet fever, the main purpose is to treat scarlet fever, it is recommended to use penicillin, acetaminophen tablets, erythromycin and other drugs under the guidance of the doctor for treatment, and if necessary, under the judgment of the doctor to choose the abscess incision and drainage and other surgical treatments, so as to improve the situation of low eosinophilic percentage. 3. Blood system diseases: such as acute myeloid leukemia, aplastic anemia and so on. In acute leukemia, the percentage of eosinophils decreases due to the abnormally high number of leukemia cells, and chemotherapy with drugs such as cytarabine is needed. Aplastic anemia has a high percentage of lymphocytes and a low percentage of eosinophils due to bone marrow failure, and is treated with drugs such as cyclosporine. If the eosinophilic percentage is low and there are no obvious symptoms, no special treatment is needed. If the eosinophilic percentage is low, it is recommended to consult a doctor in time to clarify the cause of the disease and actively treat it under the guidance of a physician.