Objective To explore the characteristics of TCM syndromes of male sterility due to microwave radiation exposure. Methods Totally 189 cases of male infertility with a history of microwave radiation occupational exposure （radiation group） and 200 cases without history of microwave radiation occupational exposure （control group） were collected. Their symptoms were observed and TCM syndromes analyzed according to the Questionnaire on the TCM Syndromology of Male Infertility. Results Compared with the control group

the significantly increased syndromes of the radiation group were the heart qi deficiency

the spleen and stomach qi deficiency

and the kidney essence deficiency （P

<

0.01）. Those with microwave radiation occupational exposure for shorter than12 months were mostly manifested as the heart qi deficiency

those with microwave radiation occupational exposure for 12

2

4 months were commonly manifested as the spleen and stomach qi deficiency

whilst those with microwave radiation occupational exposure for longer than 24 months were mainly manifested as the kidney essence deficiency

and the difference in the comparisons of different exposure times was statistically significant （P

<

0.01）. Conclusion The damage of microwave radiation exerts influence on TCM syndromes. With the prolonging of microwave radiation occupational exposure

there appear the syndromes in an order of the heart qi deficiency

the spleen and stomach qi deficiency

and the kidney essence deficiency.