Blisters are called blisters in medicine, small blisters on the belly of the finger may be related to ringworm, sweat herpes and palmoplantar pustulosis and other diseases, can be improved through general treatment, medication, physical therapy and other ways to improve. 1. ringworm: small blisters on the finger belly to consider and ringworm related, can be prescribed topical terbinafine, ketoconazole and other antifungal drugs, to help sterilize, improve the symptoms on the finger belly. 2. Sweat herpes: sweat herpes may trigger small blisters on the finger belly, patients keep hands clean, dry, recommended oral loratadine, cetirizine and other antihistamines as prescribed by the doctor, can stop itching, anti-inflammatory. Urea ointment is applied externally to relieve the rash. 3. Palmoplantar pustulosis: small blisters on the belly of the finger may be palmoplantar pustulosis, the patient must not poke the affected area, you can follow the doctor’s instructions to apply glucocorticoid ointment such as mometasone furoate ointment, dexamethasone cream and so on. In addition, patients can also choose photochemotherapy, through the ultraviolet light irradiation of the local, play the role of anti-inflammatory, improve the symptoms. The causes of small blisters on the finger belly are more, it is recommended that patients go to a regular hospital, with the doctor for standardized treatment.