The invention relates to an electromagnetic heater structure for fish farms. Primarily, it is provided with an air supply mechanism for being controlled by a control unit to output the wind outwardly. Furthermore, it is arranged with an electromagnetic heating mechanism connected to an output end of the air supply mechanism and controlled by the control unit to actuate. A hot air input pipe of a delivery pipe is connected to the electromagnetic heating mechanism and a communication pipe, and the communication pipe is connected with a hot air output pipe corresponding to each fish farm. The hot air output pipe is disposed in the water of a fish farm, and a plurality of air outlets is provided at an outer edge of the hot air output pipe corresponding to each fish farm. Thereby high-temperature and high-pressure air is injected into the water of the fish farm, and the water in the fish farm is heated by the high-temperature and high-pressure air. Thus it can not only effectively increase the water temperature in the fish farm, but also prevent aquatics from being affected by the cold damage. Also, it can increase the oxygen content in the water to make the aquatics grow healthier, so as to increase the practicality and efficiency for the whole implementation.本發明係有關於一種魚塭電磁加熱器結構，其主要係設有送風機構受控制單元控制作動供向外輸出風力，且設有電磁加熱機構連接設置於送風機構之輸出端，令電磁加熱機構亦受控制單元控制作動，令輸送管路之熱風輸入管與電磁加熱機構相連接，且於熱風輸入管連接設有連通管，並於連通管對應各養殖魚塭接連接設有熱風輸出管，熱風輸出管設置於養殖魚塭之水中，於熱風輸出管外緣則開設有諸多出風孔；藉此，將高溫高壓空氣注入養殖魚塭的水中，利用高溫高壓空氣對養殖魚塭中的水進行加熱，不僅可有效提高養殖魚塭中的水溫，防止水產生物受到寒害情況發生，且連帶可增加水中的含氧量，令水產生物更為健康成長，而在其整體施行使用上更增實用功效特性者。
