Biolayer interferometry is an optical system that monitors interactions between biological materials and detects biological materials rapidly for lable-free.Due to its advantages of real-time,rapidness and low sample consumption,biolayer interferometry has been gradually used for detecting interactions between proteins,peptides,nucleic acids,small molecules,and/or lipids.Furthermore,biolayer interferometry could also provide a solid foundation in rapid detection field because of its low sample consumption and strong specificity.In this article,the principle of biolayer interferometry is discussed,and two major application areas including kinetic analysis and rapid detection are investigated and reviewed.The development trend and future application of biolayer interferometry for measuring biological materials are also prospected.