---

Background: Diabetes mellitus is one of the most important health problems in the world. B-cells are susceptible to damage by free radicals. Noticing the mechanism of cupping, this study was carried out to evaluate the effect of cupping together with drug therapy on biochemical factors and oxidative stress. Materials and Methods: In this clinical trial, 5ml of intravenous blood was obtained from diabetic patients in beginning and late stages of this disease who referred to a diabetes center. In addition to receiving metformin and glibenclamide, the patients underwent cupping after one month and were analyzed one month later. Blood samples obtained one month before and after the treatment were compared in terms of diabetes and oxidative stress indicators. To evaluate lipid peroxidation, TBA method was used and FRAPS method was employed to measure total serum antioxidants and blood factors by Pars Azmon kit. Results: Hemoglobin A1C, fasting blood sugar, blood sugar 2 hours after fasting, triglycerides, cholesterol, and low-density lipoprotein as well as high-density lipoprotein showed significant increases. Aspartate transferase in diabetic patients significantly decreased after phlebotomy (p<0.05). Conclusion: Cupping improves blood factors in diabetic patients and it is recommended to be used as a complementary treatment in patients with diabetes type II.