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【目的】了解本地区成年男性各年龄段骨密度（BMD）的变化情况和骨质疏松症（OP）的发生率及其相关危险因素。【方法】采用美国L unar公司的双能X线骨密度仪对2260例成年男性进行腰椎L 2～4和髋部BMD测定。【结果】男性BMD峰值在25～29岁，30岁后随年龄增加而降低；超重组和肥胖组的BMD显著高于正常体质量组（ P ＜0．05）。消瘦组各部位BMD显著低于正常体质量组（ P＜0．05）。年龄、高钙饮食、体质量指数及锻炼作为OP的风险因子，OR值分别为1．07，0．945，0．849，0．494。OP发生率随着年龄的增长而增高（ P ＜0．05）。【结论】成年男性BMD随年龄增长而降低，OP的发生率也随之增加；高钙饮食、体质量指数及锻炼是OP的保护性因素，而年龄是OP的危险因素。“,”[Objective]To understand the change of bone mineral density (BMD) ,the incidence rate of osteoporo-sis(OP) and its relative risk factors among adult men in local area .[Methods]BMD of L2~4 and hip of 2260 adult men were measured by American Lunar dual energy X-ray absorptiometry (DEXA) .[Results] The peak value of BMD in men were seen in 25~29 years old ,and decreased with the increasing of age after 30 years old .BMD in o-verweight group and obesity group were markedly hither than that in normal weight group ( P<0 .05) .BMD in ema-ciation group was markedly lower than that in normal weight group ( P<0 .05) .Age ,high-calcium diet ,body mass index and exercise were the risk factors of OP .The values of OR were 1 .070 ,0 .945 ,0 .849 and 0 .494 ,respective-ly .The incidence rate of OP increased with age( P<0 .05) .[Conclusion]BMD in adult men decreases with the in-creasing of age ,and the incidence rate of OP increases with age .High-calcium diet ,body mass index and exercise are the protective factors of OP ,but age is the risk factor of OP .