OBJECTIVE： To investigate the effects of rosuvastatin combined with tirofiban on serum inflammatory factors and renal function in acute coronary syndrome patients with diabetes after percutaneous coronary intervention （PCI）. METHODS： A total of 120 acute coronary syndrome patients with diabetes receiving PCI selected from cardiology department of our hospital during Apr. 2014-Mar. 2015 were divided into control group and observation group according to random number table， with 60 cases in each group. Except for routine treatment， control group was given Rosuvastatin calcium tablets orally after surgery （10 mg each day， for consecutive 7 d）； observation group was given Rosuvastatin calcium tablets orally before and after surgery （20 mg before surgery； 10 mg each day after surgery， for consecutive 7 d）， and then given Tirohydrochloric acid sodium chloride injection during surgery [10 μg/kg intravenously， 0.15 μg/（kg·min） with intravenous pump for 36 h]. Clinical efficacies of 2 groups were compared. The changes of serum inflammatory factors （TNF-α， IL-6， IL-10） and renal function indexes （Scr， CysC， eGFR）， the incidence of radiographic contrast nephropathy were compared before surgery and 24， 72 h after surgery. The occurrence of cardiovascular events was followed up for one year. RESULTS： There were no statistical significance in baseline information between 2 groups before treatment （P＞0.05）. The number of complete remission case and total response rate in observation group were increased significantly higher than control group （P＜0.05）， while number of invalid cases was significantly lower than control group （P＜0.05）. Compared with before surgery， the levels of serum inflammation factor in 2 groups were decreased significantly 24， 72 h after surgery， while the levels of Scr and CysC were increased significantly in control group 24， 72 h after surgery and in observation group 24 h after surgery； the level of eGFR was decreased significantly， while the level of CysC was increased significantly in observation group 72 h after surgery， with statistical significance （P＜0.05）. The improvement of serum inflammation factors and renal function indexes in observation group were more significant than control group （P＜0.05）； the incidence of radiographic contrast nephropathy was significantly lower than control group （P＜0.05）. The incidence of 1-year angina pectoris and total incidence of cardiovascular events were significantly lower than control group （P＜0.05）. CONCLUSIONS： Rosuvastatin combined with tirofiban can promote the recovery of renal function in acute coronary syndrome patients with diabetes after PCI， reduce the levels of serum inflammatory factors and decrease the incidence of radiographic contrast nephropathy and post-treatment cardiac events. Its effects are different from rosuvastatin alone.