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Objective: To investigate the prevalence and related risk factors of osteoporosis in Partial Population of Beijing. Methods: 346 people who came to our hospital for health examination in Haidian district, Beijing from January to June 2018 were slected. Bone mineral density (BMD) of the hip was measured using dual energy X-ray absorptiometry. The height, weight and the body mass index (BMI) was collected. A survey of previous history, including previous disease, drug use and lifestyle habits was conducted. The occurrence of osteoporosis and its related risk factors between different bone masses and genders was analyzed. Results: The prevalence of osteoporosis is 26.8% for all 346 people, and 35.3% for female. BMD abnormal accounts for 69.5% in all population. For all population, advanced age, coffee consumption and carbonated drinks are risk factors of osteoporosis (OR 1.098, 95% CI 1.072-1.125; OR 3.576, 95% CI 1.302-9.826; OR 5.407, 95%CI 1.317-22.202). For male, advanced age, use of hormone and coffee consumption are risk factors of osteoporosis (OR 1.103, 95%CI 1.065-1.142; OR 127.924, 95%CI 10.045->999.999; OR 11.863, 95%CI 2.969-47.400). For female, advanced age is risk factor of osteoporosis (OR 1.088, 95%CI 1.059-1.117). Conclusion: The middle-aged and elderly population in Haidian District of Beijing has a high prevalence of osteoporosis. Advanced age, low body weight and poor living habits are risk factors related to osteoporosis, and higher body weight is protective factor of osteoporosis, thus early screening and intervention are advised for these population. [ABSTRACT FROM AUTHOR]