PROBLEM TO BE SOLVED: To provide a plant cultivation machine facilitating setting and shading a water culture medium supply mechanism, and preventing algae or fungi from propagating on a water culture medium supply mechanism and a cultivation panel.SOLUTION: This plant cultivation machine includes a cultivation tank 2 for cultivating plants by soaking in a water culture medium, and a water culture medium supply mechanism 7 for supplying a water culture medium to the cultivation tank 2. The water culture medium supply mechanism 7 has a liquid storage box 71 set on the upper opening edge of the cultivation tank 2, and a shading sheet 79 covered on the liquid storage box 71 so as to shade light from a lighting device. An ejection port 78 for ejecting a water culture medium in the liquid storage box 71 into the cultivation tank 2 is formed on the liquid storage box 71, and the shading sheet 79 is suspended into the cultivation tank 2 so as to cover the ejection port 78. A path g leading a water culture medium ejected from the ejection port 78 into the cultivation tank 2 is formed between the shading sheet 79 and the peripheral wall of the cultivation tank 2.
