PROBLEM TO BE SOLVED: To increase cultivation in the whole year and crop conditions, which are not bound by seasons or areas, by enabling plant cultivation, which is not influenced by a change in sunshine or temperature due to seasons.SOLUTION: This greenhouse 100 for plant cultivation includes a greenhouse 200, in which the ground 400 (floor) is covered with a roof 210 and an outer wall 220 thereby screening a sunbeam by the roof 210 and the outer wall 220, a lighting means (a fluorescent lamp 310), which irradiates a plant 300, which is cultivated inside the greenhouse 200, with light, a heat-radiation means (the outside 212 of the roof), which is installed inside the roof 210 to radiate heat inside the greenhouse 200 to outside the greenhouse 200 by heat radiation, an indoor heat-radiation means (a heat-radiating ceiling 230 and a heat-radiating wall 250), which at least partially radiates heat being conducted from outside a room to its inside.