To provide a reinforcing member for an agricultural house that can sufficiently reinforce the vertical load of the agricultural house, can be easily attached and detached, and does not need to be separately fixed with a support. A reinforcing member for an agricultural house includes a base, a height adjusting portion that rises upward from the base, and a reinforcing column 12 that is connected to the height adjusting portion and is movable in the vertical direction by the height adjusting portion. And a hook-shaped hook portion 13 provided at the upper end of the reinforcing column, the hook portion being fixed to a part of the upper end edge of the reinforcing column and extending upward, and from the upper end of the base end portion It has an upper surface portion 17 that is bent and horizontally disposed at a distance from the upper end of the reinforcing column, and a hanging portion 18 that hangs downward from the tip of the upper surface portion, and the vertical direction between the upper surface portion and the upper end of the reinforcing column. The distance in the direction and the distance in the horizontal direction between the lower end of the hanging part and the upper end edge of the reinforcing column are distances into which the horizontal longitudinal member of the agricultural house can be inserted. [Selection] Figure 5【課題】農業用ハウスの鉛直荷重に対する補強を十分なものとすることができ、容易に取り付け及び取り外しができ、上部に別途受け具を固定する必要がない農業用ハウスの補強部材を提供する。【解決手段】農業用ハウスの補強部材は、ベースと、ベースから上方に向かって立ち上がる高さ調整部と、高さ調整部に接続され、高さ調整部によって上下方向に移動可能な補強柱１２と、補強柱の上端に設けられる鉤形のフック部１３とを備え、フック部は、補強柱の上端縁の一部に固定されて上方に延びる基端部１６と、基端部の上端から屈曲し、補強柱の上端と距離を開けて水平に配置される上面部１７と、上面部の先端から下方に垂れ下がる垂下部１８とを有しており、上面部と補強柱の上端との鉛直方向の距離、及び垂下部の下端と補強柱の上端縁との水平方向の距離は、それぞれ農業用ハウスの水平長手材を挿入可能な距離である。【選択図】図５
