The present invention relates to an environmentally-friendly plant cultivation system, and more specifically, to an environmentally-friendly plant cultivation system capable of smoothly operating a plant cultivation system using sunlight and ground heat, comprising: an illumination device which provides illumination required for plant growth and a temperature control device which controls the temperature of a plant cultivation space, wherein the illumination device includes a light-collecting unit which collects sunlight, a light-conveying unit which conveys the sunlight collected by the light-collecting unit to the plant cultivation space, a lighting unit which emits the sunlight conveyed by the light-conveying unit into the plant cultivation space, and a cooling unit which cools the lighting unit. The lighting unit includes an LED light and thus can supplement the illumination provided by sunlight. The cooling unit includes an air cooling means in the proximity of the LED light which enables circulation of outside air, and thereby allows heat to be exchanged between an air cooling unit and the LED light, which consequently prevents the LED light from overheating when the LED light is in continuous use in prolonged cloudy weather during the rainy season and ultimately prevents malfunctions and the occurrence of fire in the lighting unit. The temperature control device includes both an indirect ventilation unit which ventilates by means of ground source heat exchange and a direct ventilation unit which brings atmospheric air directly into the plant cultivation space. Therefore, by supplying the atmospheric air whose temperature is maintained constant directly into the plant cultivation space, the temperature control device can have improved efficiency and reduce the power required for the indirect ventilation unit and heat loss.COPYRIGHT KIPO 2016본 발명은 친환경 식물 재배 시스템에 관한 것으로, 더욱 상세하게는 식물의 생장에 필요한 조도를 제공하는 조도제공장치와, 식물 재배 공간의 온도를 조절하는 온도조절장치를 포함하고, 조도제공장치는 태양광을 집광하는 집광
