ObjectiveTo investigate the current situation of healthcareassociated infection(HAI) in hospitals of Miao and Dong Autonomous Prefecture of Guizhou Province, and provide basis for formulating prevention and control measures of HAI.MethodsAccording to the unified plan of the National HAI Surveillance Network, 26 hospitals in Miao and Dong Autonomous Prefecture of Guizhou Province were performed crosssectional survey on HAI prevalence rate, antimicrobial use, and specimen bacterial culture rate.ResultsA total of 3 tertiary and 23 secondary hospitals were investigated, 7 799 inpatients were included, the prevalence rate of HAI was 2.54%(n=198), and case prevalence rate was 2.65% (n=205). HAI mainly distributed in intensive care unit (29.63%); the main infection site was lower respiratory tract (44.44%); HAI mainly caused by gramnegative bacteria, the major pathogens were Escherichia coli, Pseudomonas aeruginosa, and Klebsiella pneumoniae. The usage rate of antimicrobial agents was 45.66%, secondary hospitals was higher than tertiary hospitals (53.65% vs 31.14%,χ2=148.53，P<0.001）.74.02% of antimicrobial agents were for therapeutic purpose, 19.77% for prophylaxis, and 6.21% for both prophylactic and therapeutic application; 81.02% of patients received one agent, 17.21% received two, and 1.77% received three and more agents; among patients who received antimicrobials for therapeutic as well as for both therapeutic and prophylactic purpose, only 29.37% were sent specimens for pathogenic detection.ConclusionThe prevalence rate in this region is lower than national average level, antimicrobial usage rate is lower than national standard, management of key departments and key sites should be strengthened, antimicrobial agents, especially used in secondary hospitals should be used rationally.