A composite structure having a laminated structure made of fiber reinforced plastic and metallic material comprises a base member(s) made of metallic material; and a reinforcement member(s) made of fiber reinforced plastic, the reinforcement member(s) comprising: a first reinforcement part(s) made of fiber reinforced plastic including reinforcement fibers which are aligned in a uni-direction, and a second reinforcement part(s) made of fiber reinforced plastic including at least reinforcement fibers which are aligned in a crossing direction relative to the uni-direction in which the reinforcement fibers of the first reinforcement part(s) are aligned, and interposed between the base member(s) and the first reinforcement part(s), the reinforcement member(s) further comprising a thermosetting resin included in a bonding site with the base member(s).