PROBLEM TO BE SOLVED: To provide a plant cultivation apparatus and a plant cultivation method which are capable of realizing uniformization of atmosphere in a cultivation space by a simple and inexpensive configuration to improve cultivation efficiency.SOLUTION: A plant cultivation apparatus 1B that cultivates plants 6 in a cylindrical cultivation space S comprises: lighting devices 13 arranged in the cultivation space S； a tubular member 40 forming the cultivation space S； an air inlet port 41 arranged for a side end member 40a on one end side of the cultivation space S； an air outlet port 42 arranged for a side end member 40b on the other end side of the cultivation space S； and an air outlet part 5 which outlets gas in the cultivation space S from the air outlet port 42, in which air flow is generated in the cultivation space S by exhaust air from the air outlet port 42.SELECTED DRAWING: Figure 7
