Abstract:In recent years, gallium-based low-melting-point alloys or gallium-based liquid metal composites have demonstrated significant potential applications. This is attributed to the diverse properties offered by gallium-based low-melting-point alloys, which exhibit both liquid flowability and metallic characteristics at room temperature. This paper provided an overview of the development background of gallium-based low-melting-point alloys and their composites, offering detailed insights into the preparation, properties, and applications of these composite materials. The methods and mechanisms of gallium-based low-melting alloy composites in the composites of metallic and non-metallic materials were summarized. Furthermore, the latest research progress of room-temperature galliumbased liquid metal composites in many fields such as intelligent sensing electronic skin, printing and thermal interface materials were elaborated. The future development of liquid metal technology was prospected, and it provided strong basic research support for the further development and application of gallium-based liquid metal matrix composites.