The present invention relates to an illumination system of a plant factory, which comprises at least one light emitting component configured on one side of a curved surface shield, a carrier component coupled with the curved surface shield and provided for the curved surface cover to stretch, rotate and move, and a control module connected with the carrier component and the light emitting component. The control module controls the illumination setting of the light emitting component and the motion of the carrier component, and is configured on one side of the carrier component. The cultivating plant is placed on the carrier component, and the light from the light emitting component may be uniformly irradiated onto the cultivating plant by the curved surface shield. The curved surface shield may be rotated and stretched through the carrier component to be adapted with the current growing status of the cultivating plant, so as to achieve the practical applicability for energy saving and growth adaptation.本發明為有關於一種植物工廠照明系統,其包含有至少一設於一曲面罩體一側處之發光組件、一與該曲面罩體結合設置且供該曲面罩體伸縮旋轉活動之載具組件及一與該載具組件及該發光組件資訊連結之控制模組,該控制模組係控制該發光組件之照明設定及該載具組件之活動,且該控制模組係設於該載具組件之一側處,藉由上述之結構,將培育植物放置於載具組件上,並由曲面罩體將發光組件散發之光源均勻照射於培育植物上,且透過載具組件旋轉及伸縮曲面罩體配合培育植物當前的生長的狀態,藉此達成節約能源及配合生長調整之實用進步性。1‧‧‧曲面罩體2‧‧‧發光組件3‧‧‧載具組件4‧‧‧控制模組