The present invention relates to a smart farming device and, more specifically, to a smart farming device which is configured to quickly and effectively discharge foreign matters to the outside while continuously supplying water to fish and shellfish so that the fish and shellfish can be farmed in the clean environment. According to the present invention, the smart farming device comprises: a water tank main body formed in a hollow shape and including an opening formed upward; a farming portion arranged inside the water tank main body, configured to accommodate fish and shellfish therein, and including a plurality of through holes connected to the inside of the water tank main body; a first separation portion formed as one side of the farming portion and one side of the water tank main body are separated from each other; a second separation portion formed as the other side of the farming portion and the other side of the water tank main body are separated from each other; a third separation portion formed as a lower surface of the farming portion and a lower surface of the water tank main body are separated from each other; a water feeding portion installed on the first separation portion and configured to feed water to the inside of the water tank main body; and a drainage portion installed on the second separation portion and configured to discharge water in the water tank main body to the outside, wherein the water fed from the water feeding portion is discharged to the outside through the drainage portion after passing through the third separation portion and the second separation portion.
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