Excessive intake of sucrose increases the risk of metabolic diseases such as diabetes,obesity and hyperglycemic syndrome.As people's concern for their health gradually increases,and the concept of low-sugar or zero-sugar food enters the public's view.Hence natural sweeteners have received widespread attention.Erythritol is a sugar alcohol sweetener of natural origin,and most studies have shown that erythritol is a relatively healthy and functional sugar substitute.This paper discusses the structure,physicochemical properties,functional properties of erythritol and its application in beverage development,with a view to providing theoretical support for the application of erythritol in the actual production of beverage industry in the future.