To study the correlation between TCM constitution characteristics and syndrome pattern regularity of breast cancer patients.Methods:Five hundred and four breast cancer patients who had no surgical treatment before were included into experimental group and 505 normal females were taken into the control group. In accordance with “the table of Chinese medicine constitution classification and discrimination”, these women were classified into 9 kinds of constitution: gentle temperament, qi deficiency, yang deficiency, yin deficiency, phlegm wet mass, damp and hot, blood stasis, qi depression and the great mass. And with reference to the “guidelines for TCM syndrome” and “standard of disease diagnosis curative effect of traditional Chinese medicine”， breast cancer patients were divided into 5 symptoms of qi deficiency, yin deficiency, blood deficiency, thoroughfare-controlling disharmony and stagnation of liver qi, The SPSS 16.0 statistical software was used to study the correlation between patients’ physical distribution and the rule of the symptoms of TCM.Results:Through the stepwise regression analysis of the patients’ constitution and TCM syndrome, it showed that on the basis of qualitative and qualitative animate, in the constitution types of gentle temperament, yin deficiency, hot and humid, qi depression and the great mass, the constituent ratio of the symptoms of the patients had significant difference (P<0.05); through the statistical analysis of the patients’ TMC syndrome and constitution, it showed on the base of five kinds of syndromes of qi deficiency, Yin deficiency, blood deficiency, thoroughfare-controlling disharmony and stagnation of liver qi, the constituent ratio of physical fitness had significant differences（P<0.05）.Conclusion:There is certain correlation between syndromes of TCM constitution characteristics and syndrome of patients with breast cancer, this provides a new approach for breast cancer "preventive treatment of disease" and early treatment which has a far-reaching significance.