A skin/bulkhead structure comprising a barrel-shaped skin and a pressure bulkhead composed of a stiffening member and a bulkhead skin, wherein an end of the stiffening member is mechanically connected to an opening of the barrel-shaped skin through a first connecting member and marginal portion of the bulkhead skin is adhesive-connected to the opening through a second connecting member, the barrel-shaped skin, the stiffening member, the bulkhead skin, the first connecting member and the second connecting member being each made of a fiber-reinforced composite.