Abstract: ObjectiveTo examine the status of calcaneal bone mineral density and its relevant factors among traffic police in Guangzhou city and to provide basis for prevention of osteoporosis in the population.MethodsUltrasonic bone density measurement was conducted in 745 traffic police to detect calcaneal bone mineral density and a questionnaire was used to collect relevant information and physical examination data in the police.SPSS 13.0 was used in statistical analysis.ResultsFor male traffic police the bone stiffness index(STI,%)was 97.73±19.09,lower than that of the female traffic police(102.36+16.42),with a significant difference(t=2.21,P=0.006).With the increment of age,the normality rate of bone density declined and the loss of bone density increased among the male police(χ²=89.038,P<0.001).There were significant differences in bone density among the male police with different body weight(F=2.887,P=0.035),smoking and alcohol drinking(P<0.05 for all).ConclusionThe bone density of male police influenced by age,smoking,alcohol drinking,and body weight.