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Objective To evaluate the bone quality of young men by quantitative ultrasound,and to identify modifiable factors that influence bone status,so as to provide a reference for the improvement of bone quality.Methods The right heel bone quality,fat-free-mass (FFM),countermovement jump (CMJ) performance and the grip strength were measured by ultrasound bone densitometer (GE Achilles Express),multi-frequency body composition analyzer (Tanita,MC-180MA),vertical jump test device (Beijing Xindonghuateng,ZTJ-II) and grip strength device (Beijing Xindonghuateng,WCS-II) respectively in 518 adults men from the east part of China.Pearson correlation analysis was used to analyze the relationship between age,body parameters and bone quality.Multiple regression analysis was used to explore the influence factors of bone quality.Results Bone quality had a significant correlation with age,FFM,CMJ height and grip strength (r=-0.344,P<0.001;r=0.210,P=0.004;r=415,P<0.001;r=0.202,P<0.005,respectively).Multivariate regression analysis revealed that age,FFM,CMJ height were the determinations of calcaneal bone quality.Conclusions These results suggest that bone quality declines with increasing age.Maintaining a certain level of FFM,muscle strength is important for bone health.Local muscle strength has a higher correlation with local bone strength.