Atrial septal defect ( ASD) is a common congenital heart disease. Through a careful study of " three essential therapeutic methods for treating haematemesis" that is" lowering qi" ," promoting blood circulation" and" nourishing liver" which were record-ed in Medical Notes in Xianxing Study of MiuXiyong, Professor Huang Zhengde applied it on medical records of ASD hematemesis. Using clinical experience, determination of pathogenic factors based on the differentiation of symptoms and signs, and combining syndrome differ-entiation treatment with differentiation of diseases, we obtained obvious ef...