The present invention relates to a circulation type plant cultivation apparatus, which comprises a first rail unit having multiple rail layers laminated to be separated at predetermined intervals wherein a layer is formed by a pair of rails arranged to face each other to be separated by the width of a tray a second rail unit having multiple rail layers corresponding to the rail layers of the first rail unit, and arranged to be separated from the rail layers of the first rail unit at predetermined intervals a transport unit connected to the first and second rail units to be horizontally movable so as to move trays mounted on odd number rail layers of the first and second rail units to one side, and trays mounted on even number rail layers of the first and second rail units to the other side a first elevation unit arranged on one side of the first rail unit and lifting the trays transferred from the odd number rail layers of the first rail unit to the even number rail layers a second elevating unit arranged on the other side of the second rail unit and lowering the trays transferred from the even number rail layers of the second rail unit to the odd number rail layers and a first elevating unit interposed between the first and second rail units, lifting the trays transferred from the even number rail layers of the first rail unit to the odd number rail layers, and lowering the trays transferred from the odd number rail layers of the second rail unit to the even number rail layers. The circulation type plant cultivation apparatus is characterized in that trays are circulated by being lifted in a zig-zag path by the first rail unit, the first elevating unit and a third elevating unit, and being lowered in a zig-zag path by the second rail unit, the second elevating unit and the third elevating unit.COPYRIGHT KIPO 2014본 발명은 순환식 식물재배장치에 관한 것으로서, 트레이의 폭의 길이만큼 이격되어 대향 배치되는 한 쌍의 레일이 하나의 층을 이루되 서로 소정높이로 이격되어 적층되는 복수의 레일층을 가지는 제1레일부와, 제1레일부의 레일층과 대응되는 복수의 레일층을 가지되 제1레일부의 레일층에
