Abstract: With the development of renewable energy power generation technology, microgrids with distributed energy storage have become an important part of small regional power grids. As the core technology for achieving distributed control in microgrids without communication conditions, droop control technology has significant advantages in dealing with the power distribution and voltage stability of multiple energy storage systems. This paper introduces the underlying technical principles of droop control, systematically reviews the technical progress of improved strategies of droop control in AC/DC microgrids, analyzes its application efficiency in scenarios such as dynamic response, state of charge balance, and impedance matching, and provides a reference for the research on control strategies of distributed energy storage microgrids.