At present, the research on the slimming effect of tea mainly focuses on green tea, and green tea, green tea catechin and EGCE are used for cell culture and exercise.

It has been proved that it can reduce the differentiation and proliferation of adipocytes, fat formation, fat mass, body weight, fat absorption, plasma TG level, FFA, cholesterol, glucose, insulin and leptin. At the same time, increase β oxidation and heat production. Adipose tissue, liver, intestine and skeletal muscle are the target organs of green tea, which indirectly play their role in losing weight.

Human studies have found that green tea reduces body weight and body fat, while increasing fat oxidation and heat production. However, there is little research on the weight loss effect of black tea, oolong tea and Pu 'er tea. Only one report was found in the comparative study of weight loss effects of green tea, black tea, oolong tea and Pu 'er tea. Different varieties of tea, different processing methods and different components also lead to inconsistent research results. It can be seen that the effective components of tea, especially black tea, oolong tea and Pu 'er tea, and their molecular mechanisms of anti-obesity need to be further explored.