Objective To discuss the correlation between TCM syndromes and TCM constitutions of the patients with mammary gland hyperplasia.Methods Using the TCM constitution scale to make a survey on 985 subjects

the patient group（patients of mammary gland hyperplasia） 623 cases and the control group（healthy people） 362 people

to compare the distribution of 9 kinds of constitutions in both groups.The subjects in the patient group were differentiated into liver qi stagnation syndrome

phlegm and blood stasis in combination syndrome

and Chong-Ren dysfunction syndrome for observing the distribution of TCM syndromes.The multivariate regression analysis was applied to detect the influence of constitutions on mammary gland hyperplasia.Results Five constitution types

balanced constitution

qi deficiency constitution

yang deficiency constitution

yin deficiency constitution

and qi stagnation constitution

of the patient group were statistically different in comparison with those of the control group（P<0.05）

of them

the qi stagnation constitution

qi deficiency constitution

and yin deficiency constitution were the risk factors of being involved in mammary gland hyperplasia（P<0.05）.In the patient group

there were 335 cases of liver qi stagnation syndrome

128 cases of phlegm and blood stasis in combination syndrome

and 140 cases of Chong-Ren dysfunction syndrome

the difference of TCM syndrome distribution in different patients was statistically significant（P<0.01）.Conclusion The qi stagnation constitution

qi deficiency constitution

and yin deficiency constitution are the risk factors of being involved in mammary gland hyperplasia.The patients of liver qi stagnation syndrome and phlegm and blood stasis in combination syndrome are mainly with qi stagnation constitution and those of Chong-Ren dysfunction syndrome are mainly of qi deficiency constitution.