Eosinophils that is, eosinophils, normal range 0.5 ~ 5 × 109 / L, eosinophils high common in allergic diseases (urticaria), parasitic infections (ascariasis), its different causes of eosinophils high drug treatment is also different, generally for the cause of the drug after eosinophils can be decreased. 1. Allergic diseases: such as urticaria or drug allergy, you can use anti-allergic drugs such as chlorpheniramine maleate, prednisone, levocetirizine under the guidance of physician. 2. Parasitic infections: such as roundworm disease, schistosomiasis infection and other parasitic diseases, you can use albendazole, praziquantel and other antiparasitic drugs under the guidance of the physician. If the examination found elevated eosinophils, it is recommended to go to the hospital to consult a specialist to clarify the diagnosis and give targeted treatment, the above drugs need to be used in accordance with the doctor’s instructions, do not self-medication.