Abstract: Objective To comprehend the purpose of current AFB-EQA mode deeply for improving the quality of the microscopy examination for TB control.Methods The datum of current EQA mode and original mode were compared,and analyzed the effects of the Results to improve the quality of AFB.Results The consistency positive rate from original mode was 97.1%(578/595),the consistency negative rate from original mode was 99.1%(1135/1145);from current EQA mode,they were 89.6%(225/251) for consistency positive rate and 98.7%(1067/1081) for consistency negative rate.Comparing with the datum of original EQA mode,more information were obtained from the datum of current AFB-EQA mode;current information can inflect truly the status of the operations for AFB microscopy daily;the evaluating reports of current AFB-EQA can be used for improving on the problems of AFB examinations.Conclusions The current AFB-EQA mode is feasible,the Results of EQA are important for the evaluations of AFB to improve quality of AFB operating.

Key words: Acid fast bacilli,Microscopy examination, External quality assessment