The baby was poisonous mosquito bites appear hard lumps, at this time can choose drugs oral, topical and other ways to treat. Oral medication can be applied to children can choose anti-allergy drugs, such as dexloratadine dry suspension, chlorpheniramine maleate tablets, levocetirizine hydrochloride oral solution. If the hard lump is more obvious, it means that the inflammatory infection is more serious at this time, you can choose the anti-inflammatory drug azithromycin dry mix suspension or apply cefaclor granules for treatment. For topical application, you can choose fusidic acid cream or compound polymyxin B ointment, mixed dextran cream or dexamethasone acetate ointment for treatment. Avoid excessive scratching of the affected area by children during treatment.