对无锡市层流方向不同的２所医院的无菌净化病房，用尘埃粒子计数器与平板沉降法，进行了空气尘埃粒子数与细菌总数检测。一医院采用层流侧进风式，其有 １００级净化病房４间，治疗室及其它辅助用房的净化等级为 １０ ０００级，辅助净化区采用病房使用后流出的余风，整个净化 In the two hospitals with different laminar flow directions in Wuxi City, the number of airborne dust particles and the total number of bacteria were measured using a dust particle counter and a plate sedimentation method. A hospital using laminar flow into the side, which has 100 purification wards, treatment rooms and other auxiliary rooms of purification level of 10 000, the auxiliary purification zone after the use of ward outflow of residual wind, the entire purification