PROBLEM TO BE SOLVED: To provide a plant cultivation greenhouse designed to replace the air (hot air) in the house with outside air by an exhaust fan, the house using a simple cooling equipment capable of pre-cooling the outside air introduced into the house.SOLUTION: According to the present invention, there is provided the plant cultivation greenhouse. Here, an insecticidal net 3 capable of ventilation is stretched on a side surface 11 of a house main body 1, which is formed by covering the top thereof with a transparent covering material 2. An exhaust fan 5 for discharging the air inside the house main body 1 to the outside of the house is provided at an appropriate place of the house main body 1. An external fine mist cooling device 8 for cooling the air in the vicinity of the outside of the side surface 11 of the house main body 1 on which an insecticidal net is stretched is provided and the air inside the house main body 1 is forcibly exhausted by the exhaust fan 5 to introduce the cooling fresh air, which has been mist-cooled by the external fine mist cooling device 8, into the house main body 1 through the insecticidal net 3, thereby keeping the inside of the house at a temperature lower than the outside air temperature.SELECTED DRAWING: Figure 1【課題】ハウス内の空気（熱気）を排気フアンによって外気と入れ替えるようにした植物栽培温室において、ハウス内に導入される外気を簡易な冷却設備を用いて予め冷却できるようにすること。【解決手段】上部を透明な被覆材２で被覆してなるハウス本体１の側面１１に通気可能な防虫ネット３を張設し、ハウス本体１の適所に該ハウス本体１内の空気をハウス外に排出する排気フアン５を設け、防虫ネットを張設したハウス本体１の側面１１の外側近傍位置の空気を細霧冷房する外部細霧冷房装置８を設けているとともに、ハウス本体１内の空気を排気フアン５で強制排気することで、ハウス本体１内に外部細霧冷房装置８で細霧冷房された冷却外気が防虫ネット３を通して導入されるようにしていることにより、ハウス内を外気温度より低温に維持できるようにしている。【選択図】 図１
