With the effect of alcohol, components of athlete's foot medicine penetrate deeply into the skin and athlete's foot is cured early and completely. The athlete's foot treatment liquid is a mixture of athlete's foot medicine and alcohol, which has a feature of penetrating into the skin well. The athlete's foot treatment liquid permeates well into the inner sock. It permeates all over the sock by capillarity. The impermeable bag, which does not have liquid medicine leak out, is worn on the inner sock. The impermeable bag is filled with the athlete's foot treatment liquid. The opening of the impermeable bag is closed tightly with the rubber band so as not to have the athlete's foot treatment liquid permeate, evaporate or leak out. The outer sock is worn on the impermeable bag. The impermeable bag is compressed inward, so that the athlete's foot treatment liquid is pushed up to an upping line.