The multi-degree-of-freedom motor can realize complex motion in space, and has the advantages of simple structure and high accuracy. It has broad application prospects in robot bionic joints, mechanical arms and industrial manufacturing. Firstly, the background, basic principles and technical advantages of multi-degree-of-freedom motor are described. Multi-degree-of-freedom motors are classified according to different mechanisms, and the current domestic and foreign research status of multi-degree-of-freedom motors are summarized. In addition, based on the motion characteristics of the multi-degree-of-freedom motor, the position detection technology and motion control strategy in the motor control process are analyzed. Finally, related descriptions are made on the structure, control system, materials and manufacturing process of the multi-degree-of-freedom motor, and the development trend of the multi-degree-of-freedom motor is predicted. Through the research and analysis of the multi-degree-of-freedom motor, reference is provided for its future development.