Abstract: An apparatus for cultivating plants may include a cabinet having a cultivation space; a door that opens and closes the cultivation space; at least one bed disposed in the cultivation space and on which plants are cultivated; at least one light assembly that radiates light for photosynthesis toward the at least one bed; a water tank that stores water to be supplied to the at least one bed; a machine compartment separated from the cultivation space at a lower portion in the cabinet, that communicates with an outside of the apparatus, and that accommodates a compressor and a condenser forming a cooling cycle for controlling a temperature of the cultivation space; an air duct that connects the machine compartment and the cultivation space and guides air in the machine compartment to the cultivation space; and a return duct that connects the cultivation space and the machine compartment and guides air in the cultivation space to the machine compartment.