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.
