The invention belongs to the technical field of medicine, and specifically discloses a hypoglycemic drug and its application. It consists of the following raw materials in terms of weight fraction: 5-10 parts of bromocriptine, 15-20 parts of acarbose, and 5-20 parts of kudzu root extract 10 parts, 10-15 parts of xylitol, 0.1-0.5 parts of sorbic acid, 1-5 parts of aspartame, 0.1-0.5 parts of talcum powder and 5-10 parts of dextrin. The hypoglycemic drug of the present invention can effectively solve the problem in the prior art that common hypoglycemic drugs alone cannot effectively control type 2 diabetes, and at the same time have the effects of controlling blood sugar, synergistically protecting endothelial cell function, and reducing diabetic complications.