Obesity is a nutritional metabolic disorder caused by genetic factors and environmental factors, and its clinical manifestations are hypertrophy and proliferation of fat cells. Epidemiological research shows that obesity has become a major disease that harms human health. With the deepening of research, the function of reducing weight and lipid of tea has attracted wide attention. Studies have shown that green tea, oolong tea, Pu 'er tea and their main active components, such as tea polyphenols, caffeine, theaflavins and tea saponin, have certain lipid-lowering and weight-reducing effects. Blue brick tea is a unique black tea in China, mainly produced in southern Hubei. It is a necessity for ethnic minorities in northwest cold areas such as Inner Mongolia, Xinjiang, Qinghai and Gansu and high-fat diet areas. The heat of highland barley is not confused by tea. "Blue brick tea has its unique quality and function because of its unique raw materials and technology. It is also very effective and has no side effects.