Small blisters between the fingers of children may be caused by sweating herpes, chickenpox, hand, foot and mouth disease and other conditions, need to be used according to the doctor’s instructions and other drugs for treatment. 1. Sweat blisters: the cause of sweat blisters on the hands is unknown, and contact with allergens, psychiatric factors, dermatophyte infections, etc., which can lead to small blisters between the fingers, can be used according to the doctor’s orders hydrocortisone cream, mometasone furoate cream, tretinoin acetate urea cream and other drugs, but also pay attention to keep the local dry and clean. 2. Chickenpox: Chickenpox is caused by varicella zoster virus infection, in addition to blisters on the fingers, other parts of the body will also appear similar rash, accompanied by high fever and lymph node swelling. You can take oral ribavirin tablets, acyclovir tablets, vasiclovir hydrochloride tablets and other medications, and treat it with topical glycerite lotion. 3. Hand, foot and mouth disease: hand, foot and mouth disease is caused by coxsackie virus infection, can lead to blisters between the fingers, the treatment can use anti-virus oral solution, oseltamivir phosphate granules, ribavirin granules and other drugs. When children develop small blisters between their fingers, it is recommended that parents take their children to the hospital in time to find out the specific cause and use medication according to the doctor’s instructions to actively treat the disease.