A lot of small blisters on the fingers to consider with eczema, tinea versicolor, sweat herpes and so on. 1. Eczema: the cause of its pathogenesis is still unclear, mostly related to genetics, local stimulation, temperature and other factors, the patient is mostly symmetrically distributed erythema, papules, blisters, vesicles and other polymorphic lesions, accompanied by obvious itching. 2. Ringworm: due to the local skin combined with fungal infections such as trichophyton, patients mostly have scattered distribution of small blisters, accompanied by peeling or thickening of the skin and other manifestations. 3. Sweat herpes: the cause is unknown, mostly related to allergies, mental factors, etc., the patient manifested as a symmetrical distribution of small blisters in both hands, accompanied by itching or tingling, blisters generally do not rupture. For patients with a lot of blisters on the fingers, there may be other reasons, it is recommended to the regular hospital dermatology, clear cause of the disease under the guidance of the doctor active treatment.