Provided is a plant cultivation facility wherein the temperature of surrounding plants can be maintained within an optimal range for cultivation while taking into account a non-uniform temperature distribution in an air blowing direction. This plant cultivation facility is provided with a cultivation shelf and an air conditioner in a room having a floor, side walls and a ceiling. A blow-out part of the air conditioner is installed on a side wall surface of the room so that the air in the entire room can be controlled, and a suction part of the air conditioner is installed on a side wall surface facing the aforementioned side wall surface. The cultivation shelf is provided with holding containers for holding plants, lighting devices and a support structure having multiple levels in the height direction, the levels each having: a support surface on which a holding container can be mounted and a ceiling surface which faces the support surface and allows a lighting device to be installed above the holding container. A value ?T determined by a specific equation on the basis of an effective shelf space height (H) and an effective shelf width (D) is not higher than 10ºC.
