Abstract: Objective To prepare cognitive assessment questionnaire on nursing ethics. Methods The methods of the research applied interview and face cross-sectional survey,prelimi-nary test paper was formed on the basis of the original research papers,and formal assessment test was formed with 17 questions.Using stratified sampling,468 nurses aged 19~53 years were col-lected from 4 first-class hospitals,reliability and validity assessment were tested through factor analysis regression and other statistical analysis methods.Results Nurses in nursing work on ethics problem of cognitive assessment table eventually confirmed 17 items,internal consistency co-efficient of the questionnaire was 0.922,and internal alpha coefficients of 2 factors were 0.901 and 0.921.By factor analysis,basic nursing operation,protection of privacy and self-supervision 2 factors were extracted and they could explain that the total variance was 53.589%,and project load value was 0.517~0.758.Conclusion The nurses to ethics problems in nursing work cogni-tive assessment scale have good reliability and validity,which can be used to study the nursing ethics.