Objective To study on the relationship between psychological harmony and mental health of health care providers. Methods Surveys on psychological harmony and mental health were conducted in 313 health care providers in Heibei Province by psychological harmony and SCL-90 questionnaire. Results The general psychological harmony,and mental health level of health care providers is lower than the national level; The psychological harmony and its dimensionality of health care providers is affected mainly by many factors such as emotional stability, the level of patients' cooperation, on-duty situation in holiday time, salary, the rate of solving difficult miscellaneous diseases, the number of medical tangle and paranoid symptoms.etc., among which solving difficult miscellaneous diseases effectively is the most important factor. Conclusion The general psychological harmony situation does not affect health care providers' mental health.