"Cancer toxin"is a new concept about formation and development of tumor that put forward by traditional Chinese medicine tumor field in recent years. The exacerbation of "cancer toxin"is the development of tumor.In clinic

disease still progress in a large portion of tumor patients despite various modern therapies have been taken

and "cancer toxin"is still exacerbated. The immanent cause is closely related to deficiency of healthy Qi in Chinese medicine and "variation"of tumor in western medicine. Tumor is easy in "variation"

which attributes to "heterogeneity"of tumor cells and drug resistance.