[Problem] To provide a hydroponic cultivation unit and a hydroponic cultivation system with which cultivation yield is improved and high workability and cleanability are balanced at a low cost. [Solution] This hydroponic cultivation unit is characterized by including: a cultivation cylinder constituted from a plurality of cylindrical split bodies that can be mutually attached, the cultivation cylinder having at least one opening on a side surface thereof; and a planting member having one end opening in which plants are disposed, and another end opening that can be attached to the opening of the cultivation cylinder.
