PURPOSE: A plant factory system is provided to increase the crop productivity per unit cell part according to efficiently use space to raise crop inside of cell part. CONSTITUTION: A building unit consists of horizontally or vertically connecting cell part(100) which is composed as a side part of connecting the top and bottom. A building unit mutually connects the side of cell parts in case of connecting horizontality, and mutually connects top and bottom of cell parts in case of connecting verticality. A cell part is cant column shape. A main supporter(110) is vertically arranged in the center. A exterior cover material(115) is formed with multiple plastic sheets that is passed well by lights, and a gap is formed between plastic sheets. A vertical material is arranged parallel to the main supporter. A horizontal material(130) is arranged to connect the interval between top and bottom of adjoining vertical materials. A step(140) is arranged to connect top of main supporter, top of vertical material, bottom of main supporter, and bottom of vertical material. A plane which is surrounded by a main supporter, a vertical material, a step is formed with concrete. A polygonal shape which connects top of vertical material, and a polygonal shape which connects bottom of vertical material are the same polygonal shape formed in the top or bottom of main supporter. A polygonal shape which connects top of the vertical material and bottom of vertical material is a hexagon shape. A vertical material is arranged at a same interval, which has same distance from the center of main supporter on the same plate.본 발명의 식물공장 시스템은, 다각형 형상의 상면과 하면, 및 상기 상면과 상기 하면을 연결하는 측면으로 구성되는 셀부를 수평 또는 수직으로 연결하여 구성되는 건물부를 포함하고, 상기 건물부는, 수평으로 연결하는 경우 상기 셀부의 일측면끼리 서로 맞닿아 연결되고, 수직으로 연결하는 경우 상기 셀부의 상하면끼리 서로 맞닿아 연결되고, 상기 셀부는 다각기둥 형상이다.
