This study was designed to evaluate the clinical effectiveness and safety of cefoxitin compared with cefmetazole in treatment of respiratory, urinary tracl aerobic infeclions and oral cavity anaerobic infections.

• 本研究采用随机对照临床设计评价头孢西丁治疗呼吸道、泌尿道需氧菌感染及口腔间隙厌氧菌感染的临床疗效、细菌学效果及安全性，并与头孢美唑对照。