Xinyang Maojian sweet tea. a kind of rare plant with health care Junction. non-toxicity. low- calorie, and high sweetness, is one of the three sweet plants growing naturally in Xinyang Maojian province. Rubusoside is a main active component in this kind of sweet tea. which is employed as a non-sugar sweetener with high sweetness and low calorific value. Its sweetness is 300 times of sucrose, and its flavor is close to sucrose. This review deals with the distribution and nutritional components as well as the content, physical and chemical properties, separation and purification, determination, physiological functions and toxicity of the sweet tea component (rubusoside) in Xinyang Maojian sweet tea. The application prospect of rubusoside and the leaves of Xinyang Maojian sweet tea are also forecasted in this review paper.