To study the distribution of Traditional Chinese Medical(TCM) constitution of patients with breast cancer and to analyze the correlation between TCM constitution and breast cancer. Methods: The pre-designed questionnaire and the method of case-control were used to classify and analyze the TCM constitution of breast cancer patients and normal population to understand the correlation between TCM constitution and breast cancer. Results:The ratio of constitution type in two groups had statistical difference (P< 0.05)， and the constitution of qi stagnation and phlegm wetness and blood stasis in breast cancer patients was higher in ratio than normal population. The three types are the main factors affecting breast cancer (P<0.05).Conclusion: The major relevant TCM constitution of breast cancer patients is qi stagnation ， phlegm wetness ， blood stasis.