To promote the research and application of feedforward decoupling control theory in the field of DC/DC converters,this paper summarizes the existing types of decoupling control theory and DC/DC converter control methods,and provides a detailed introduction to the research and application status of feedforward decoupling control theory in the field of DC/DC converter control.Research has found that feedforward decoupling control can significantly improve the dynamic response speed and stability of DC/DC converters.