目的:观察左旋氧氟沙星注射液治疗细菌感染的疗效。方法:47例细菌感染患者,男20例,女27例,年龄25～65岁,平均49±12岁,轻度至中度感染用盐酸左旋氧氟沙星100mg/次,1次/天静脉滴注,重度感染用100mg/次,2次/天静脉滴注,疗程5～7天。结果:受试病例总有效率为83.0％,细菌清除率为80.9％,不良反应发生率为4.3％。结论:左旋氧氟沙星治疗细菌感染安全、有效。 Objective: To observe the efficacy of levofloxacin injection in the treatment of bacterial infection. Methods: Forty-seven patients with bacterial infection were enrolled in this study. There were 20 males and 27 females with an average age of 49 ± 12 years (range, 25-65 years). Mild to moderate infections were treated with levofloxacin hydrochloride 100 mg once daily, Instillation, severe infection with 100mg / time, 2 times / day intravenous infusion, treatment of 5 to 7 days. Results: The total effective rate was 83.0%, the bacterial clearance rate was 80.9% and the adverse reaction rate was 4.3%. Conclusion: Levofloxacin is safe and effective in the treatment of bacterial infections.