To provide a plant cultivation device with easy maintenance and a small number of components.SOLUTION: A plant cultivation device has: a plurality of cultivation trays 13 in which a storage tank storing culture solution therein is formed； and culture solution supply means for supplying culture solution to the cultivation trays in a cultivation space 7. The cultivation trays 13 are introduced from a tray carrying-in port 85, the cultivation trays 13 are moved toward a tray carrying-out port 86 in the cultivation space 7, the cultivation trays 13 are carried out from the tray carrying-out port 85, during which plants planted in the cultivation trays 13 are raised. A plurality of roller members 152 are installed in the cultivation space 7, the cultivation trays 13 are mounted on the roller members 152, and by carrying in a new cultivation tray 13A from the tray carrying-in port 85 into the cultivation space 7, the cultivation trays 13 which were already carried in by the cultivation trays 13A are pushed and moved toward the tray carrying-out port 86.SELECTED DRAWING: Figure 23【課題】メンテナンスが容易であり、部品点数も少ない植物栽培装置を提供する。【解決手段】内部に培養液を貯留する貯留槽が形成された複数の栽培トレイ１３と、栽培空間７内において栽培トレイに培養液を供給する培養液供給手段を有している。トレイ搬入口８５から栽培トレイ１３を導入し、栽培空間７において栽培トレイ１３をトレイ搬出口８６に向かって移動させ、トレイ搬出口８５から栽培トレイ１３を搬出し、その間に、栽培トレイ１３に植えられた植物を成長させる。栽培空間７内に複数のコロ部材１５２が設置され、栽培トレイ１３はコロ部材１５２の上に載置され、新たな栽培トレイ１３Ａをトレイ搬入口８５から栽培空間７に搬入することによって当該栽培トレイ１３Ａによって既に搬入された栽培トレイ１３をトレイ搬出口８６側へ押し動かす。【選択図】図２３
