目的 调查ICU护士对活动减少型谵妄的知识、态度、行为现状，分析其影响因素。 方法 采用方便抽样法从重庆市38个区县抽取780名ICU护士，使用ICU护士活动减少型谵妄知信行调查问卷进行横断面调查。 结果 ICU 护士对活动减少型谵妄知识缺乏，对早期识别和护理活动减少型谵妄患者态度积极，对活动减少型谵妄的早期处理和筛查行为亟待提高。 多元线性回归分析显示，不同ICU工作年限（t=-3.453，P=0.001）、是否护理过谵妄患者（t= 2.795，P=0.005）、是否参加过活动减少型谵妄培训（t=3.712，P<0.001）影响知识得分；不同职称（t=2.941，P=0.003）影响态度得分；是否参加过活动减少型谵妄培训（t=6.458，P<0.001）影响行为得分。 结论 各层级医院的ICU护士对活动减少型谵妄知识掌握情况不佳，对患者进行定期谵妄筛查、早期处理行为亟待提高，需制订规范的活动减少型谵妄评估、护理流程，提高临床活动减少型谵妄护理质量。

Objective To investigate the knowledge，attitude and behavior of ICU nurses on hypoactive delirium and analyze its influencing factors. Methods A total of 780 ICU nurses were selected from 38 districts and counties in Chongqing by convenience sampling method，and a cross-sectional survey was conducted using the questionnaire of hypoactive delirium knowledge，attitude and behavior of ICU nurses. Results ICU nurses had poor knowledge of hypoactive delirium，and were active in early identification and nursing of patients with hypoactive delirium，and it was needed to improve early treatment and screening of hypoactive delirium. Through multiple linear regression analysis，different years of working experience in ICU（t=-3.453，P=0.001），caring for patients with delirium（t=2.795，P=0.005），attending training on ICU hypoactive delirium（t=3.712，P<0.001） had impact on the knowledge score of ICU nurses，different professional titles（t=2.941，P=0.003） had impact on the attitude score of ICU nurses，attending training on ICU hypoactive delirium（t=6.458，P<0.001）had an impact on the behavior score of ICU nurses. Conclusion ICU nurses in different level of hospitals have poor knowledge of hypoactive delirium，it is urgent to improve regular delirium screening and early management of patients. It is necessary to develop standardized assessment and nursing programs for hypoactive delirium and improve the nursing quality of hypoactive delirium.