The utility model relates to a plant planting device which takes the plant height as a reference.Including: a box body,There is a culture room.A planting unit,It is arranged in the incubator of the box.The utility model has a pot body and a planting frame.Among them,The planting frame is arranged at the opening of the basin.A predetermined space is reserved between the bottom of the basin body and the planting frame；The planting frame has a plurality of holes.For planting of predetermined plants,And the root of the plant can reach the space under the planting frame；A height detection unit,Installed in the box,To detect the height of plants in the culture room；A control unit,Set in the box,Receive the altitude signal from the altitude detection unit.一種以植物高度為參考之植物植栽裝置，包含有：一箱體，其中具有一培養室；一植栽單元，設置於該箱體的培養室中，具有一盆體以及一植栽架，其中，該植栽架設置於該盆體的開口處，使該盆體的底部與該植栽架之間保留一預定空間；該植栽架具有複數個孔洞，供栽種預定植物，並使植物的根部可到達該植栽架下方的空間；一高度偵測單元，裝設於該箱體，用以偵測該培養室中的植物的高度；一控制單元，設置於該箱體，接收該高度偵測單元所傳來之高度訊號。
