The present invention provides a plant cultivation system that is possible to continue stable irradiation of an appropriate amount of light regardless of the weather condition and the like while utilizing the sunlight. Further, the present invention provides a plant cultivation system that is possible to prevent the humans from being exposed to a visual stress when the humans approach the place where the light suited for growing the plants is irradiated. The present invention relates to a plant cultivation system, comprising: a light measure that measures an amount of photons of sunlight； a light controller that controls an amount of photons to be irradiated to a plant according to the measured amount of photons； and a light irradiator that irradiates light to the plant in the controlled amount of photons.
