Background: In the 21st century, as a health problem of increased nonspecific low back pain, it is becoming one of the risk factors for leaving the occupation. 90-95%of the total waist back pain is the nonspecific back pain. Overloading of the spine because nurses are in a compressed position to work with the patient is a high risk for back pain. This study aim of our study was relationship between nonspecific low back pain and workplace among nurses in tertiary care first, second and third hospitals in Mongolia. Methods: This study used a descriptive correlational design to relationship between nonspecific low back pain and physical activity among nurses. We collected data from 133 registered nurses, randomly selected and working in three general public tertiary care hospitals in the capital city of Ulaanbaatar of Mongolia. An instrument used were the Standardized Nordic Musculoskeletal Questionnaire (SNMQ). Data were analysed using descriptive statistics and correlation coefficient test. Results: Sixty two percent (82) were perceived a low back pain. The ratio of nurses with non-specific low back pain is 82 / 51=0.62 (odds). In other hand, one in two nurses were perceived non-specific low back pain, which is high prevalence. The relationship between nurses’ low back pain and workplace, r=0.25 has a direct weak correlation and is not statistically significant (p=0.15). Conclusions The results suggest that effective preventive measures form nonspecific low back pain for nurses. In the future, it is important to protect the health of existing nurses and keep them in the workplace.