Small blisters on the soles of the feet (small blisters), may be a normal phenomenon caused by friction with the shoes, may also be caused by tinea pedis, and may be caused by sweat herpes, the causes are different, the treatment method is different. 1. Physiological factors: long walking, or shoes do not fit, may lead to the soles of the feet blisters, this is the friction caused by the local oozing and the formation of blisters, is a normal phenomenon, do not need to intentionally pick the blisters, can wait for its self-absorption, if the blisters are ruptured, you need to avoid infection, the use of iodine pouches can be sterilized. 2. Tinea pedis: Tinea pedis is a disease caused by skin fungal infection of the foot, the disease can also lead to patients with small blisters on the soles of the feet, the treatment can be used sertaconazole, terbinafine and other drugs coated externally for treatment. 3. Sweat herpes: Sweat herpes is a recurrent non-inflammatory blistering disease that occurs on the hands and feet, and is prevalent in people with sweaty hands and feet, and can be treated with oral loratadine, topical urea ointment, and other medications. After excluding physiological factors, if the symptoms of small blisters on the soles of the feet continue to be unrelieved, you should consult a doctor in time to find out the cause and ask the doctor to dispose of it.