Objective: To find the regularity of Chinese dialectical therapy about colorectal cancer.Method:A number of literatures which were public home reported this 30 years have been analysed by sort and statistics.Result:As the etiopathogenisis, splenic asthenia and renal deficiency are the most important intrinsic factors, while pyretic toxicity、stagnated blood and wet heat are the main evil domination. Common syndromes of primary colorectal cancer are as fellows:asdthenic splenonephro-yang，deficiency of both QI and blood，hepatic and renal yin deficiency，humid heat and pyretic toxicity-stagnated blood . Conclusions:There is regularity in Chinese dialectical therapy about colorectal cancer, and the regularity is important to clinic.