Abstract: Metal-organic framework (MOF) is a new type of nano-material with porous and high specific surface area. Ionic liquids (IL) are characterized by good stability and functional design. Loading IL into the pores of MOF to achieve an effective combination of ionic liquids and MOF materials to develop new composite materials is conducive to giving full play to the advantages of the two materials. This article mainly introduces the latest research on the synthesis methods, structural properties and applications of IL/MOF composites, summarizes the current problems and opportunities in the research of IL/MOF composite materials, and prospects the development direction of IL/MOF composite materials.