A receiving container includes a frame member and a first reinforcing member. The frame member is formed of a plastic material. The frame member includes a bottom part of which a center portion is opened and sidewalls respectively extending from peripheral edges sides of the bottom part. The first reinforcing member is separably disposed internally within at least one of the sidewalls, and disposed substantially parallel to a length direction of the at least one of the sidewalls, the first reinforcing member reinforcing a strength of the at least one of the sidewalls.