The principles, schemes and production balance of motor shaft production line design during the implementation of intelligent motor manufacturing are introduced. The advantages and disadvantages of U-shaped and linear arrangements of motor shaft production line are analyzed. The data collection and information interaction in the workshop where the production line is located in are introduced. These can provide a reference for the planning of shaft processing production lines in the motor industry. After the renovation of the project, the required production equipment is decreased by 29%, the number of employees is decreased by 77%, the production efficiency is increased by 35%, and the defective rate is decreased from 2.5% to 0.25%, improving the quality conformance of products.