Objective：To evaluate the predictive validity of modified Munro pressure ulcer risk assessment scale（Munro scale） for adult perioperative surgical patients. Methods：Firstly，the scale and made cultural adaptation by Brislin’s translation model was translated. Then the prospective cohort study design was adopted，totally 246 surgery patients in two hospitals were recruited by convenience sampling method and investigated by the scales. Results：Seventeen patients（6.9%） developed pressure ulcer. Area under receiver operating characteristic curve was 0.715（95%CI=0.586 to 0.844，P=0.003）. The cutoff score of modified Munro scale was 29.5 for the risk of pressure ulcer，with the sensitivity of 0.588，specificity of 0.799，PPV of 0.178 and NPV of 0.963. Conclusion：The predictive validity of modified Munro scale for perioperative surgical patients with adult is ordinary，and there is room for improvement，but now it could be used to assess pressure ulcer risk of surgical patients.