Objective To investigate the effect of quality control circle on the health promotion of diabetic patient. Methods Diabetes activity group of quality control circle was organized to have continuous disease control management on diabetic patients. Self-care capability, blood glucose, blood fat and body mass index variation of patients before and after the management were analyzed and controlled. Results After QCC management, the self-care capability of patients was significantly improved before admission to hospital(P<0.01). After being controlled by QCC activity group, 6 months after discharge from hospital, the fasting blood glucose, blood glucose 2 hours after dinner and blood fat declined dramatically, and the average body mass index also relieved significant, which was significantly different from it before admission to hospital (P<0.01). Conclusion Continuous and effective service conducted by quality control circle activity to diabetic patients can not only reach self-management, but also an effective way to cure diabetes and control complications, which is worth popularizing. Key words: Diabetic patients; Quality control circle; Self-care ability; Blood glucose control