The present invention relates to a smart plant cultivation system, which accommodates soil for plant cultivation, cultivates plants through nutrient solution supplied through a first pipeline, and secondly absorbs water remaining after being absorbed by the plants and the soil. A plant cultivation container discharged to the pipeline; A sedimentation tank for temporarily storing water flowing through the second conduit and at the same time precipitating suspended matter; A sterilization treatment device for receiving and sterilizing water from which the floating matter has been removed from the sedimentation tank; An image photographing unit for obtaining a plant image by photographing a plant grown through the plant cultivation container through at least one camera; A processor that generates a nutrient solution according to a preset plant cultivation schedule and supplies it to the plant cultivation container, and adjusts a nutrient solution component according to the plant condition after determining the plant condition through the plant image; A nutrient solution to store and store a plurality of fertilizers having different components, and to prepare the nutrient solution by adjusting the input amount of each of the plurality of fertilizers and the amount of water inflow from the sterilization treatment device under the control of the processor, and then supplying the nutrient solution to the first pipe Supply; And sensing the water level and the water quality of the sedimentation tank or the sterilization treatment device through a water level sensor and a water quality sensor, and when at least one of the water level and the water quality falls below a preset value, external to the sterilization treatment device or the nutrient solution supply unit. It may include a water supply for additionally supplying the water.
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