A plant cultivation illumination system includes a plant cultivation unit and an illumination module. The plant cultivation unit is set in a predetermined area. The illumination module provides a lighting source to the area. The illumination module includes several illumination units and an illumination controller. The illumination units are at least arranged in a first sub-area and a second sub-area. The illumination controller controls turning on or off of the illumination units corresponding to the first sub-area and the second sub-area, based on different growing status of the plants in the plant cultivation unit.. A plant cultivation illumination method is also provided.本發明提供一種植物栽種照明系統,包括一植物栽種單元以及一照明模組。植物栽種單元配置於一預定區域。照明模組提供上述區域一照明光源,照明模組包括複數個發光單元及一發光控制單元。發光單元至少排列成第一子區域及第二子區域。發光控制單元控制對應第一子區域及第二子區域內的該些發光單元,根據植物栽種單元內之一植物之一生長狀態而分別開啟或關閉。此外,亦提供一種植物栽種照明方法。302‧‧‧發光單元304‧‧‧發光控制單元402‧‧‧外加光學元件SUB_A‧‧‧第一子區域SUB_B‧‧‧第二子區域
