本文介绍了国内外手术室微生物控制标准及其设施的现状。针对手术室细菌浓度大、感染率高的问題,在现有研究成果的基础上,设计了一种新的手术室用局部层流净化装置——可调方向气幕保护的局部层流净化机组。从理论和实验两方面证明了该装置的优越性。装置的各项性能指标——速度场、尘埃浓度场、细菌浓度场及噪声均达到较先进的水平。 This article describes the status of microbiological control standards and facilities in operating theatres at home and abroad. Aiming at the problem of large bacteria concentration and high infection rate in the operating room, based on the existing research results, a new local laminar flow purification device for operating rooms—a local laminar flow purification unit with adjustable direction air curtain protection—is designed. . The superiority of the device was proved from both theory and experiment. The performance indicators of the device - speed field, dust concentration field, bacterial concentration field and noise all reach more advanced levels.