Provided is a plant cultivation house capable of supplying carbon dioxide into a plant cultivation room where the inside of the plant cultivation room is hardly affected by the temperature of the outside air. The plant cultivation house 1 of the present invention includes a plant cultivation room 10 in which at least one of the wall 11 and the roof 12 is constructed by the heat shield 15, and carbon dioxide from outside the plant cultivation room 10 into the plant cultivation room 10. Carbon dioxide supply means 20 for supplying outside air. The heat shield 15 is a laminated sheet 150 in which a metal foil 142 such as an aluminum foil is laminated on a sheet material 141.
