Abstract: Objective To evaluate the quality of life among type 2 diabetes mellitus(MD) patients in the communities and its chief influencing factors. Methods Three hundred cases of type 2 DM patients were surveyed by questionnaire which included the individual conditions and a short form SF- 36 measuring scale. Resuits Social support, age, education level, fasting blood - glucose value, and knowledge of the disease were the main influencing factors. Conclusion It is very important to pay more attention to enhance health education to patients to strengthen familial and social support, and improve heahhcare service in community.