Objective To investigate the effectiveness of diabetes shared care model. Methods From October 2016 to June 2017, patients with diabetes mellitus who had been visiting shared care clinic for more than 6 months in Peking University First Hospital were selected. Height, weight and glycated hemoglobin A1c (HbA1c) level were measured at the first visit and 6-month follow-up. Five scales were used to evaluate its disease self-management ability and social psychology,“Summary of Diabetes Self Care Activities 6” “World Health Organization-5 Well-Being Index” “Patient Assessment of Chronic Illness Care-DAWN Short Form” (PACIC-DSF) “Diabetes Empowerment Scale-DAWN Short Form” and “Problem Areas in Diabetes Scale 5” (PAID-5). Results A total of 76 patients met the inclusion criteria and completed data collection and scale evaluation. Compared with baseline, scores of disease self-management ability in monitoring the blood sugar [1.0 (0.0, 3.0) vs 3.0 (1.0, 5.0) points, Z=2.978, P=0.003], and self-examination of the foot [0.0 (0.0, 6.8) vs 4.5 (1.0, 7.0) points, Z=3.374, P=0.001] were significantly improved after 6-month follow up, no significant difference was observed in healthy diet, exercise, or medication. Social psychology related index such as getting help from staff (PACIC-DSF) [(33±16) vs (41± 13), t=5.475, P<0.001] and low mood disorders (PAID-5) [43.4% (33/76) vs 48.7% (37/76), X2=11.023, P< 0.05] were significantly increased. No significant difference was found in authorization ability score and the happiness index. Patients achieved greater reduction in HbA1c (7.3%±1.4% vs 7.0%±1.2%, t=2.133, P< 0.05) six months later, with no significant difference in body mass index, low-density lipoprotein-cholesterol, and medication cost (all P>0.05). Conclusion Shared care model can improve blood glucose monitoring and foot self-examination ability, promote patients getting more help from healthcare professionals, alleviate mood disorders, and decrease HbA1c. [ABSTRACT FROM AUTHOR]