Children’s underarm drowning (i.e. “dipping”) may be caused by physiological reasons, may also be related to pathological reasons, such as eczema or ringworm, after diagnosis can be general treatment as well as medication, the cause of the disease is different, the use of drugs is also different. 1. Physiological reasons: such as armpit sweating, airtight, should be replaced with loose comfortable clothing, and adjust the surrounding temperature, to avoid sweating more armpits, to keep the local clean and dry, the symptoms are more pronounced, need to consult a doctor in a timely manner, under the guidance of the doctor can be used externally with glycerine lotion astringent antipruritic or external tannic acid ointment to isolate the perspiration, to prevent impregnation. 2. Pathologic causes: (1) Eczema: it can cause erythema, papule, papule herpes in the armpit, accompanied by oozing, vesicles, itching and so on. When the child’s armpit appeared impregnation, can use 3% boric acid solution wet compress; to be localized without oozing, can follow the doctor’s instructions for external use of mometasone furoate cream and other glucocorticosteroid ointment; itching is serious, but also can follow the doctor’s instructions for oral loratadine and other antihistamine drugs. (2) Tinea corporis: red spots, pimples, blisters, etc. can appear in the armpits, which can also be accompanied by oozing, itching and other symptoms, and excessive scratching can also cause localized breakage and erosion. If the diagnosis of ringworm is confirmed, when local maceration occurs, boric acid solution can be used as wet compresses first, and when the local dryness occurs, antifungal drugs can be applied, such as terbinafine hydrochloride cream, etc., and oral antifungal drugs can be taken as prescribed by the doctor in case of seriousness. Parents are advised to bring children with armpit stains to regular hospitals for consultation and standardized treatment under the guidance of doctors after a clear diagnosis. Parents should not use drugs arbitrarily, but follow the doctor’s instructions, safe and reasonable to the child’s medication.