Abstract:The rate of remnant pole is one of the important technical indexes of copper electrorefining by ISA method. The rate of remnant pole can reflect the advance of production technology and the level of production management, and at the same time affect the processing cost per ton of copper of the whole company. This paper mainly introduces the main factors which influence the rate of remnant pole in copper electrorefining by ISA method, and analyzes the influence of these factors on the rate of remnant pole, at the same time, puts forward the improving measures to reduce the rate.