PROBLEM TO BE SOLVED: To provide a plant cultivation device that can be compactly stacked in a vertical direction and is suitable for a multistage structure.SOLUTION: A plant cultivation device of the present invention comprises: first conveying means for conveying plants to be cultivated； a first conveyor unit having first illumination means which is arranged in a single inclined plane above the first conveying means so as to gradually separate from the first conveying means while traveling from an upstream side to a downstream side of the first conveying means； second conveying means which conveys plants in an opposite direction from the first conveying means and installed in parallel with an inclined plane on which the first illumination means is arranged； and a second conveyor unit that has second illumination means which is arranged in a single plane above the second conveying means so as to gradually separate from conveying means while traveling from an upstream side to a downstream side of the second conveying means, and stacked on the first conveyor unit.【課題】鉛直方向にコンパクトに積み重ねることができ多段化に適した植物栽培装置を提供すること。【解決手段】本発明の植物栽培装置は、栽培する植物を搬送する第一の搬送手段と、第一の搬送手段の上方に第一の搬送手段の上流側から下流側に向かうにつれて第一の搬送手段と漸次的に離れるように一つの傾斜面内に配置される第一の照明手段を有する第一のコンベアユニットと、第一の搬送手段とは逆方向に植物を搬送し第一の照明手段が配置される傾斜面と平行に設置される第二の搬送手段と、第二の搬送手段の上方に第二の搬送手段の上流側から下流側に向かうにつれて漸次的に離れるように一つの平面内に配置される第二の照明手段とを有し、第一のコンベアユニットの上に積み重ねられた第二のコンベアユニットを備えている。【選択図】図１
