In order to achieve high efficiency and environmentally friendly metal smelting process, a set of medium frequency induction melting system has been designed to change the traditional mode of high consumption of coal and high energy consumption in cupola and power frequency melting furnace. The system is composed of medium frequency power supply and electric heating capacitor cabinet. The furnace melting system is made of coreless induction furnace and cooling machine. The medium frequency induction melting system uses high density magnetic wire to cut metal materials. The materials are melted rapidly by the eddy current heating that can efficiently melt all kinds of metals and not produce harmful waste. The medium frequency induction melting system has a very good performance in improving energy efficiency and energy saving and emission reduction, and has a high degree of automation. It has a broad application prospect in the future market.