The heating cycle machine is a high-temperature heating source. The working area uses stainless steel as the inner liner, and the outer shell is made of polystyrene electrostatic spraying. The electric heating tube heats up in the middle of the oil, which is fast, efficient, energy-saving, and has electronic constant temperature. The outer shell and inner liner of the oil bath are protected by insulation cotton, providing excellent insulation effect. It makes up for the shortcomings of similar products and is an ideal heating source choice. Suitable for jacketed reactors, chemical pilot reactions, high-temperature distillation, semiconductor industry, etc. Can be used in conjunction with various heating equipment.