Manufacturing method of reinforced structure

A manufacturing method of a reinforced structure comprising:

• preparing a cured stringer having a plate portion and formed of a composite material, wherein the plate portion has an adhesion surface to be adhered to a skin, and has at least one of side end surfaces extending along a longitudinal direction of the stringer, and the at least one of the side end surfaces functions as a fiber exposed surface extending in a thickness direction of the plate portion from the adhesion surface;
• disposing an uncured electrically conductive protection member on a part of the fiber exposed surface such that the electrically conductive protection member is separated from the adhesion surface;
• applying an adhesive material on the adhesion surface;
• arranging the stringer applied with the adhesive material on the skin having an uncured resin component;
• and
• curing the skin arranged with the cured stringer and the electrically conductive protection member simultaneously such that the adhesive material flows out from an end portion of the plate portion, and the electrically conductive protection member and the adhesive material flowing out from the end portion cover the fiber exposed surface,
• wherein the electrically conductive protection member includes a composite material made of combination of a resin component and an electrically conductive fiber component.