With its advantages of resource saving, pollution reduction and industrial upgrading, the remanufacturing industry can achieve better development. At present, the remanufacturing industry has been well applied and developed in the field of construction machinery, improving the utilization value of products and reducing environmental pressure. Electrochemical machining will not introduce residual stress, hardening layer, burns and other forms of damage to the machining surface, and is not limited by the hardness of the material. It is introduced into the remanufacturing production. In the precision low-stress machining, it is of great significance to restore the dimensional accuracy and surface morphology of the product. This chapter summarizes the current situation of remanufacturing industry and electrochemical machining technology at home and abroad