OBJECTIVE To study the situation of medical devices cleaning in Xiaoshan by monitoring.METHODS Totally 1217 antiseptic medical devices were examined on the scene by the test paper for occult blood in 8 district hospitals,9 private hospitals and 38 township hospitals.RESULTS The unqualified rate of medical devices decreased from 27.55% in 2006 to 10.89% in 2007,and it was lower in district hospitals and higher in township hospitals.The cleaning quality in operating room was better than that in gynecology and obstetrics′ department.The probe ranked the first in unqualified rate among all the cleaned devices.Cleaning efficacy by machine plus enzyme was better than by manual mode.CONCLUSIONS The cleaning quality of medical devices in hospitals of Xiaoshan District especially in township hospitals need to be improved despite the great improvement in 2007 than in 2006.It is important to improve the cleaning effects of medical devices,eliminate the impact factors as well as strengthen the inspection for cleaning effect.