Abstract Objective: To evaluate the influence of Tiao xin yin treatment of diabetic cardiac autonomic neuropathy in patients with heart rate variability.Methods:60 patients of diabetic cardiac antonomic neuropathy were divided into experiment group(n=30) and control group (n=30),the experiment group were treated with Diamicron,Diformin and tiao xin yin ,with a total course of treatment for 8 weeks.Control group were treated with Diamicron, Diformin and Methycobal, observed changes in the blood glucose,clini...