Abstract: Postinfectious bronchiolitis obliterans is an irreversible chronic obstructive pulmonary diseasein pediatric clinic，which is an important type of bronchiolitis obliterans in children. Currently there is no effectivetreatment for postinfectious bronchiolitis obliterans in modern medicine, which has caused serious damage to children's health. TCM treatment for this disease has significant characteristics. This paper introduces ProfessorWan Lisheng's understanding of postinfectious bronchiolitis obliterans and his clinical experience in differentiatingand treating the disease. As phlegm and blood stasis blocking collaterals runs through the disease, Professor Wan Lisheng has proposed the method of removing phlegm, promoting blood circulation and dredging collaterals on the basis of staging treatment, which has achieved great effects.

Key words: Postinfectious bronchiolitis obliterans, Stagnation of phlegm and blood；Staging treatment；Eliminating blood stasis, Promoting blood circulation and dredging collaterals