Abstract: The plant cultivation apparatus and plant cultivation method hasten the growth of a plant root without root injury even if the basic root has been sufficiently bathed in cultivation water solution, reduce a cost for competing with alleyway vegetables by reducing electric power consumption as much as possible, which has been the greatest factor for cultivation cost, by utilizing fluorescent light as efficiently as possible for cultivating the plant while oxygen necessary for growing the plant root can be supplied sufficiently and bacteria cannot be produced, and prevent heat injury such as a chip-burn by minimizing heat energy generated by the light source (fluorescent light).