A plant cultivating apparatus according to an embodiment of the present disclosure includes a main body, a shelf, a cultivation bed, and a cultivation container. The shelf is disposed in the cultivation space formed in the main body, the cultivation bed is disposed on the shelf, and the cultivation container is seated in the cultivation bed. The cultivation bed includes a water supply part for receiving a predetermined amount of water. In addition, the shelf includes a water level sensor. The water level sensor is positioned vertically below the water supply part to measure an amount of water stored in the water supply part.