 Methods :Data were collected from the patients with idiopathic dilated cardiomyopathy cardiac function NYHA II-IV in the first affiliated hospital of Harbin Medical University from May 2012 to April 2014. These 30 cases were treated under the recommendations of normal diagnosis and treatment in cardiomyopathy. This experiment was randomized double-blinded,the experimental interferences were avoided and patients were divided into the experimental group and the placebo group. The patients in experimental group received the relevant tests and inspections before the beginning of experiment,signed the informed consent. Then the investigators get the venous blood centrifugalization and cryopreservation. The patients take the medicine qiliqiangxin three times per day,four tablets at a time. Afrer a month,the investigators evaluated the symptoms,the function of heart,blood pressure,heart rate and keep blood specimens. Three and six month later,electrocardiogram and echocardiography were taken and the determination of the NT - proBNP was done. The placebo group was followed up in the same way. 