Purpose: This experiment aimed at observing, through animal experiments YIXIN Thai Traditional Chinese Medicine Pill on cardiac function in rats with chronic heart failure, plasma Ang Ⅱ and myocardial tissue ATI receptor protein content. Method: The use of abdominal aorta Act set up chronic congestive heart failure animal model. The success of the model rats were randomly divided into five groups: group modulus space, high-dose group of Chinese medicine, Chinese medicine in the dose group, Chinese medicine, low-dose group and western medici...