Abstract:Lonicera caerulea L. is a nutrient-rich small characteristic berry in cold areas, which is widely used in food and health fields. However, people"s understanding of Lonicera caerulea L. is still very limited, lack of in-depth understanding of its nutritional characteristics and applications. Based on this, this paper summarized the existing research at home and abroad in terms of the active ingredients, health and food applications of Lonicera caerulea L. According to the existing studies, the fruit is rich in anthocyanins, flavonoids, phenolic acids, organic acids, terpenoids, amino acids, vitamins, mineral elements and other active ingredients, and has health properties such as antioxidant, lipid-lowering, antibacterial and anti-inflammatory, anti-cancer, anti-radiation, and thyroid protection, and cyanidin-3-O-glucoside is found to be the main active ingredient. In addition, the application of Lonicera caerulea L. in fruit juice, fruit wine, freeze-dried powder, yogurt and other food fields was summarized in this paper. Finally, the research prospect was put forward, paying attention to the needs of market application, and suggestions were put forward in cultivation, planting, processing, physiological research and other aspects, aiming to provide some scientific basis for the research on the functional mechanism of Lonicera caerulea L. and the development of food and functional products.