Abstract: Refrigeration pipeline in refrigeration industry is made of copper, steel and aluminum .Pipe welding is mainly flame welding and induction welding, and its easy to burn out in the process of welding because of its low melting point of aluminum, which results in pipe wall thinning or pipe leakage. Therefore, aluminum pipe refrigeration industry basically adopts the lokring connection, while the lokring connection has high cost, and does not belong to the welding in nature, there is a large proportion of the leakage rate in the installation process. Low cost aluminum tubes in the induction brazing can be achieved under the premise of mature process connection, and the welding effect is stable, the leakage rate of welding is reduced. The induction brazing of aluminum tubes was studied in this paper, the online application conditions of the aluminum induction brazing was explored. Application and development of induction brazing can be improved in aluminum and aluminum pipe connection in refrigeration industry.