The name of the invention is glucose-reducing tea for treating diabetes, which belongs to the technical field of pure 
traditional Chinese medicine and is mainly used for solving the problems that the all the existing drugs adopt the way of pure stimulation on 
insulin secretion or exogenous increase of 
insulin for controlling blood glucose, and can not realize self-regulation of the blood glucose fundamentally, and the long-term administration can lead the blood glucose to fluctuate. The glucose-reducing tea uses the tea formulation for serving patients with diabetes for the first time, thus the administration is convenient, and the effects are significant. The glucose-reducing tea is mainly characterized by being a medicament prepared from the following raw materials in parts by weight: 10-25 parts of crude common yam 
rhizome, 10-25 parts of 
membranous milkvetch root, 5-15 parts of 
common anemarrhena rhizome, 10-25 parts of dried 
rehmannia root, 10-25 parts of kudzuvine root, 10-25 parts of mongolian snakegourd root, 5-15 parts of barbary wolfberry fruit and 5-15 parts of Chinese magnoliavine fruit. The glucose-reducing tea has the characteristics of rapidly reducing glucose, keeping the blood glucose stable in the 
normal range, nourishing liver, tonifying 
kidney, nourishing and regulating 
stomach, further improving resistance of a 
human body, reducing glucose, tonifying 
kidney, regulating blood glucose, regulating a metabolic 
system and leading the diabetes of the patients to disappear thoroughly, is mainly used for treating the patients with mild and moderate diabetes, and can rapidly relieve or eliminate symptoms and reduce complications.