Abstract： Based on long-term clinical practice， Professor ZHANG Min proposed that the pathogenesis and transmission rules of rheumatoid arthritis （RA） can be understood from the perspective of "stagnation-obstructiondeficiency." Professor ZHANG considers that qi stagnation is the onset of the disease；prolonged stagnation leads to the accumulation of pathological products，then phlegm blends with blood stasis to obstruct the meridians，which manifests as obstruction；prolonged obstruction consumes qi and blood，damages the liver and kidney，and ultimately results in deficiency. In terms of treatment， Professor ZHANG takes relieving stagnation as the core therapeutic principle throughout the course. In the early stage， modified Chaihu Shugan Powder is used to relieve stagnation and eliminate pathogens， with treatment approaches addressing both internal and external aspects. In the progressive stage， modifications are made based on the early-stage prescription according to the predominant type among the six types of stagnation， aiming to alleviate stagnation， resolve blood stasis， and unblock obstruction. In the advanced stage， a modified Chaihu Shugan Powder plus Duhuo Jisheng Decoction is used to tonify deficiency and support the healthy qi， as well as to disperse stagnation and remove obstruction. This paper systematically elaborates on Professor ZHANG′s academic experience in treating RA from the perspective of "stagnation-obstruction-deficiency， " with the aim of providing certain clinical insights.