Abstract: With the acceleration of population aging and the increasing of social life pressure,the number of people with digestive tract disorders increases sharply,which puts forward new requirements and challenges to the food and medicine industry. The digestive aid and therapeutic effects of food hydrolases have great significance in improving the nutritional health and body functions of the elderly and special groups with digestive and absorption disorders. This paper introduces the process of digestion and absorption of food,analyzes the aiding-digestion role of exogenous hydrolytic enzymes,as well as its auxiliary curative effect on some digestive diseases. Finally,personal perspectives relating the development of enzyme-based functional food was made,aiming at providing a reference for exploiting basic science research of digestive enzyme,and promoting the healthy development of this emerging enzyme-based food industry.