OBJECTIVE To summarize the risk factors of nosocomial infections in the operating rooms and explore the related control measures so as to reduce the incidence of postoperative infections.METHODS The clinical data of 9185patients with various types of operations were retrospectively analyzed,and the correlation between the operation types,the number of people visiting the operation,the content of indoor air bacteria,the time of use of scalpel in the operation,length of hospital stay,and the incidence of infe...