An inland aquaculture system according to the present embodiment comprises: a steel mill which discharges hot waste water containing waste heat； a valve unit to which a first flow path, a second flow path, and a third flow path are connected, wherein one end of the first flow path is connected to the steel mill and the hot waste water, which is discharged from the steel mill, flows into the first flow path, wherein the second flow path sucks deep water in the ocean floor of no less than a predetermined depth, and wherein the third flow path sucks cooled air from underground water of no more than a predetermined depth, a cold pool in the lower layer of the dam, or underground cavity, such as an abandoned mine, a cavern, or a wind-hole； an inland aquaculture farm which is installed near the steel mill, connected to at least one of the first to third flow paths through the valve unit, and controls the water temperature of aquaculture water； a water temperature sensing unit which is installed at the inland aquaculture farm； and a controller which controls the valve unit depending on the sensed temperature of the water temperature sensing unit, thereby maintaining the water temperature of the aquaculture water of the inland aquaculture farm at the water temperature set by a user. The inland aquaculture farm includes: a first water bath where heat exchange water flows in and out； a second water bath which is installed inside the first water bath so as to be spaced apart from upper, lower, right, and left sides of the first water bath, and stores aquaculture water for culturing fishes； and a plurality of support members which are installed on the bottom surface of the first water bath to support a lower side of the bottom surface of the second water bath. The inland aquaculture farm can utilize waste heat, terrestrial heat, and seawater.본 실시예에 따른 내륙 양식 시스템은 폐열이 포함된 온배수를 배출하는 제철소； 일단은 상기 제철소와 연결되어 상기 제철소에서 배출되는 온배수가 유입되는 제 1 유로와, 일정 깊이 이상의 해저 심층수를 흡입하는 제 2 유로 및 일정 깊이 이하의 지하
