Objective To observe the clinical effects of Yang Xin An Shen decoction on ventricular premature contraction with hyperactivity of fire due to yin deficiency type.Methods 80 cases ventricular premature contraction with hyperactivity of fire due to yin deficiency type patients were randomly divided into two groups.40 cases in control group were treated with metoprolol tablets,and 40 cases in treatment group were treated with Yang Xin An Shen decoction on the basis of control group treatment,continuously trea...