研究不同的消毒方法对医院内感染发病率及病房环境中空气、物体表面、医务人员的手、消毒剂等细菌含量的影响。结果表明,用原有的消毒方法精神科病房院内感染率为19.39％,主要是因病房环境中细菌含量超过卫生学标准,封闭式地管理方式及病人住院时间长等。采用新的消毒方法,降低了病房中空气、物体表面等的细菌含量,使院内感染率降至7.72％。 To study the impact of different disinfection methods on the incidence of nosocomial infections and the bacteria, such as air, surfaces, medical staff hands, and disinfectants in the ward environment. The results showed that the rate of nosocomial infection in the psychiatric wards was 19.39% with the original disinfection method, which was mainly due to the fact that the bacterial content in the ward environment exceeded the hygiene standards, the closed-field management method and the length of stay of the patients. The use of new disinfection methods has reduced the bacteria content in air, objects, etc. in the wards, reducing the hospital infection rate to 7.72%.