Abstract: Provided is a net support structure comprising two pairs of leg members; two uprights; two joining members each including two opposite grooves pivotably secured to the leg members, a transverse socket, and a longitudinal channel pivotably secured to the upright; a hollow, multi-segment cross member, a hollow, staged flexible plug including an internal shoulder and having one end fastened in the socket and the other end fastened in either end of the cross member; an elastic cord passed through the cross member and having either end tied as an enlargement secured to the shoulder; two disc-shaped members each disposed proximate either end of the cross member and including a central hole with the cross member passed through, and peripheral grooves for securing to the leg members and the upright when the joining member is folded; and a net including two side sheaths sleeved on the uprights.