A sandwich panel includes a middle material (2) and a surface material (3) that are laminated with a hollow columnar core (1). The middle material (2) is composed of a set of unidirectional fiber bodies (4, 5) each of whose fibers are aligned in one direction, and bonding layers formed by woven fiber bodies (6, 7). The woven fiber body (7) includes a warp yarn and a woof yarn that is orthogonal to the warp yarn, and the yarns are woven, and the woven fiber body (7) is formed so that any one of the warp yarn and the woof yarn is substantially parallel to the edge of the sandwich panel, and the other of the warp yarn and the woof yarn is substantially orthogonal to the edge of the sandwich panel.