Bridged nitrogen-rich heterocyclic energetic compounds are of the rich diversity， good thermal stability and excellent energy density. They are potential materials with high energy density and have been widely studied and reported by scholars all over the world. Among them， the imino group （—NH—）， which acts as bridged unit， can not only improve the enthalpy of formation and energy density， but also reduce the sensitivity by the formation of hydrogen bonds through the bridged imino group， thereby constructing high-energy and low-sensitivity energetic materials. This paper introduces the research progress of imino-bridged nitrogen-rich heterocyclic energetic molecules and their salts， and reviews the preparation methods， physicochemical properties and detonation properties of these energetic compounds， the future development potential and research trend of imino-bridged nitrogen-rich heterocyclic compounds are prospected， so as to provide a reference for the design and synthesis of imino-bridged energetic compounds.