With the rapid advancement of science and technology,electronic devices have progressively integrated into individuals'daily lives and are intricately interconnected with them.While providing convenience,this integration also inevitably gives rise to increasingly severe issues concerning electromagnetic radiation pollution.Consequently,addressing electromagnetic pollution control and developing high-performance microwave absorbing materials has become an urgent matter requiring resolution.Traditional microwave absorbing materials encounter challenges such as poor dispersibility,low transparency,inability to meet specific scenario requirements for wave absorption,and limited degradability.In recent years,liquid wave absorbing materials have garnered attention due to their exceptional electromagnetic response characteristics,robust environmental adaptability,as well as their ability to confer flexibility,lightweight,and transparency upon composite materials.These liquid-based materials find extensive applications in military operations,aerospace endeavors,electronic information systems,and flexible electronic components.This paper provides a comprehensive overview of the advantages exhibited by existing liquid wave absorbing materials in practical applications while summarizing the current research status from the perspectives of water-based solutions(aqueous media),ionic liquids(ILs),and liquid metals(LMs).Furthermore,this study offers insights into future trends pertaining to the development of liquid microwave absorbing materials based on these findings.