Objective To evaluate the clinical efficacy and safety of domestic sparfloxacin in the treatment of acute bacterial infections. Methods A multicenter randomized controlled clinical trial was conducted. 117 patients were treated with domestic sparfloxacin 200-300 mg qd for 5-14 days and 114 patients were treated with domestic lomefloxacin 300 mg bid for 5-14 days. Results The cure rates and the efficacy rates in each group were 84.62%, 74.56% and 94.87%, 92.98%, respectively. The bacterial clearance rates were 94.28% and 92.02%, respectively. Adverse drug reactions rates were 7.69% and 11.40%, most of them were mild. There were no significant differences of above results between the two groups (Pgt;0.05). Conclusions The results suggest that sparfloxacin with wide antibacterial spectrum, satisfactory activity, is an effective and safe antibacterial agent in treatment of mild to moderate acute bacterial infections.