PROBLEM TO BE SOLVED: To provide a nutrient solution-circulating type plant cultivation device structured as follows: cultivation racks can be drawn out without stopping circulation of nutrient solution while being a plant growing device in which water, the nutrient solution and/or the like is circulated； and thus plants implanted on the upper steps or the inner parts of the cultivation racks can be easily picked.SOLUTION: The nutrient solution-circulating type plant cultivation device is structured as follows: a nutrient solution circulating-subsidiary material 4 composed of a nutrient solution-receiving material 4a receiving the nutrient solution discharged from a water discharge pipe 3, and a supply pipe 4b for supplying the nutrient solution discharged to the nutrient solution-receiving material 4a to the cultivation racks 2, is set between the cultivation racks 2 at a position where horizontal movement of the cultivation racks 2 is not disturbed； and the water discharge pipe 3 moves on the nutrient solution-receiving material when horizontally moving the cultivation racks 2, so that the nutrient solution can be circulated without a delay in each of conditions where the cultivation racks 2 do not horizontally move, where they are in the course of horizontal movement, and where they complete the horizontal movement.【課題】水や養液等を循環させる植物育成装置であっても、養液の循環をとめることなく、栽培棚を引き出し可能とし、栽培棚の上段や奥部に植設された植物を簡単に摘採等することができる養液循環型植物装置を提供する。【解決手段】栽培棚２間に排水パイプ３から排水される養液を受ける養液受け材４ａと、養液受け材４ａに排水された養液を栽培棚２に供給するための供給パイプ４ｂと、からなる養液循環補助材４が栽培棚２の水平移動を阻害しない位置に設けられており、栽培棚２を水平移動させたとき、排水パイプ３が前記養液受け材上を動くようになされているので、栽培棚２が水平移動していない状態、水平移動の過程、水平移動完了状態の各状態において、滞りなく前記養液の循環を行うことができる。【選択図】 図１
