Small blisters on the fingers (that is, blisters) if the ringworm caused by the application of miconazole nitrate cream and other antifungal drugs to treat; if eczema or contact dermatitis caused by the application of compound dexamethasone acetate cream and so on for treatment; if it is caused by sweating herpes, can be applied to tretinoin cream, tacrolimus ointment, and other medicines to treat. 1. Ringworm: caused by fungal infection, can be manifested as blisters on the hands, flaking with itching, vesicles, etc., can be used under the guidance of the physician external miconazole nitrate cream, terbinafine hydrochloride ointment and other drugs to treat. 2. Eczema or contact dermatitis: due to allergies and contact with certain physical and chemical factors, can be manifested as erythema on the fingers, blisters with itching and other manifestations, can be under the guidance of a physician to use topical glucocorticosteroid ointment, such as compound dexamethasone acetate cream and other treatment. 3. Sweat herpes: the cause of the disease is not yet clear, may be related to allergies, dermatophyte infections and mental factors, etc., may appear in the finger blisters accompanied by itching and other manifestations. It can be treated with glucocorticoid ointment (e.g. tretinoin cream) and calcium-modulated phosphatase inhibitor (e.g. tacrolimus ointment) under the guidance of physicians according to the manifestations of skin lesions. In addition to the above diseases, there are many other causes can lead to small blisters on the fingers, it is recommended that patients with this symptom go to the hospital in a timely manner, to clarify the cause of the disease and diagnosis of targeted treatment, you can not just randomly use drugs.