To add a skin protecting component to a solid soap comprising a medical carbon of a detergent auxiliary component to add the performance of giving an adequate moist feeling by the film-forming action after washing.

The solid soap is molded by adding 1.00 wt.% bentonite of a skin protecting component to 95.90 wt.% soap base material of a detergent component, 1.00 wt.% premix medical carbon of a detergent auxiliary component, 1.00 wt.% kaolin of a detergent retention component, 1.00 wt.% perfume, and 1.00 wt.% papain powder of a detergent auxiliary component, mixing them by a mixer, and subjecting the resulting mixture to a kneading/molding step.