Objective To know the present status of the clean operating rooms in some hospitals in Shanxi province. Methods 8 indices including clean efficiency of newly built operating room were monitored during 2005-2006. Results The results showed that the overall eligible rate was 67.3%, of which the eligible rate of wind speed(air change rate)was 68.2%, humidity was 61.4%, suspend particle was 94.5%, noise was 95.5%, illuminance was 100%, temperature was 100%, differential pressure was100%, airborne bacterial was 100%, depositing bacterial was 100%. Conclusion In operating rooms, the eligible rate of biological indices is the highest and the eligible rate of purification is lower. The eligible rate of technology indices is the lowest.