The production of dorsal furuncle is usually due to deficiency of yang or deficiency of qi and blood,combined with infecting six climatic exopathogens or internal injury of seven emotions,or improper diet,resulting in cold phlegm coagulation,stagnation of qi and blood stasis,and then into yin toxin which internally damage to viscera,muscles and bones.Abdominal mass in woman is caused by many factors,such as hyperactivity or weakness of viscera gasification function,invasion of exogenous pathogens,dietary disorders,emotional disorders and so on.It eventually forms a pattern of stagnation of blood stasis,phlegm and blood stasis cementation,collateral obstruction and qi obstruction and results in abdominal mass pattern in a long time.Qi and blood are two basic substances that constitute and maintain human life activities.The disorder of qi and blood function will lead to the formation of many diseases and syndromes.This paper discusses the etiology and pathogenesis of abdominal mass and dorsal furuncle from the theory of qi and blood,discusses the influence of zang-fu viscera,six climatic exopathogens and seven emotions on qi and blood,and analyses the relationship between internal etiology and pathogenesis of abdominal mass and dorsal furuncle.It holds that the deficiency of qi and blood and the delay in operation are the fundamental links.