Dilated Cardiomyopathy (DCM) is a disease of myocardial systolic blood dysfunction.Traditional Chinese medicine has advantages in the treatment of it.Professor Weng Weiliang believes this disease belongs to the category of “heart expansion” of Chinese medicine,and the etiology lies in heart-qi deficiency.The treatment should be based on replenishing qi and nourishing heart,promoting blood circulation and removing blood stasis.He establishes the basic prescription for supplementing qi and activating blood and uses it frequently according to different situations of yin,yang,qi and blood.He attends to regulate spleen and stomach,restore the blood circulation,activate blood in heart,and tranquilize mind to treat the disease.