Abstract: Bone erosion of Rheumatoid arthritis belongs to the theory of bone rheumatism and renal arthralgia of suwen. Bone lesions in rheumatoid arthritis disease confidential in “phlegm”, “poison”, the pathological process that is “phlegm”, “poison” invasion or endogenous, phlegm and toxin accumulation, toxicity and keep help sputum, corrosion of steel corrosion of bone. The treatment of rheumatoid arthritis bone disease with “phlegm” and “poison” is regarded as the primary.

Key words: bone erosion of rheumatoid arthritis, bone rheumatism, renal arthralgia, phlegm, poison