Objective: To research the character of Chinese Medicine syndrome and syndrome factor on COPD by analyzing the neoteric literature of COPD,and to make the names of Chinese Medicine syndrome canonical.Methods: To search the neoteric literature of COPD,build up a literature data-base by epidata2.0 software and analyze the data.Results: The number of the names of Chinese Medicine syndrome changes from 322 to 178.In the acute stage,the highest frequency of Chinese Medicine syndrome is: blockage of the lung by phlegm-heat,heat phlegm,blockage of the lung by phlegm-heat and the stagnant blood.In the stable stage,the highest frequency of Chinese Medicine syndrome is: deficiency of vital energy of lung and kidney,deficiency of vital energy of lung,deficiency of vital energy and Yin, deficiency of lung and kidney,deficiency of vital energy of lung and spleen.The position of the illness is lung,kidney and spleen.The character of the illness is phlegm,deficiency of vital energy,heat,stagnant blood and deficiency.Conclusion: The names of Chinese Medicine syndrome are multiform and need to be canonical.The main character of COPD in the acute stage is affected by outside illness factors.The main character of COPD in the stable stage is weak inside.The syndromes are different when the illness in the different stages.