Abstract:Isotope ratio mass spectrometry has been widely used in many fields，especially in the field of food quality，which has achieved a series of research results in the world．The application of isotope ratio mass spec－ trometry was reviewed in identifing the authenticity and traceability of raw materials of various kinds of foods （such as wine，honey，meat， vegetable oil，fruit juice and flavouring，etc．） with the purpose of providing theoret－ ical basis for the supervision of the management department and the quality control of manufacturer．