Abstract:As the less natural component in various fats and oils，that diacylglycerol（DAG）is used as additives has been used widely in foods and cosmetics industries due to its safety，nutrition，high human body compatibility and good processing adaptability.The thermal properties of DAG have a great influence on its functionality.The different sources of DAG have different thermal properties including initial crystallization temperature，peak temperature and enthalpy.Differential scanning calorimetry （DSC）analysis is a widely used thermal analysis techniques in investigating the properties of DAG.DSC technique has the advantages of high sensitivity，high resolution，wide range of application，simple operation，speediness，and good reproducibility.In this paper，principle and classification of DSC technique were introduced，and its application in the thermal property analysis of DAG were reviewed.