目的 探究重症监护病房护理缺失现况并分析其影响因素，以期减少临床实践中的护理缺失现象。 方法 2025年1月—4月采用便利抽样法选取来自14个省级行政区的18所三级医院、7所二级医院的840名ICU护士作为研究对象，使用一般资料调查表和ICU护理缺失量表进行问卷调查。 结果 ICU护理缺失量表总分为（98.9±22.4）分。其中缺失最多的项目为心理支持类、基础护理类和康复训练类。导致护理缺失的主要原因为人力资源绝对不足、人力资源相对不足和沟通交流因素。回归分析结果显示，每班次平均负责的患者数量、是否为ICU专科护士、职称和医院级别是ICU护理缺失的影响因素（P<0.05），共解释总变异的24.4%。 结论 ICU护理缺失情况需要引起重视，尤其是心理支持类和基础护理类缺失较为严重。提示护理管理者应优化人力资源配置，加强护士培训，改善工作班次安排，加强团队协作，以减少护理缺失，提高ICU护理质量。

Objective To understand the current situation of missed nursing care in ICU in China and analyze its influencing factors，so as to reduce the phenomenon of nursing deficiency in clinical practice and optimize the nursing quality for critically ill patients. Methods A convenience sampling method was employed between January 2025 and April 2025. The study ultimately included 840 ICU nurses from 18 tertiary hospitals and 7 secondary hospitals across 14 provinces/municipalities. Data were collected using a demographic questionnaire and the ICU Missed Nursing Care Scale. Results The total score on the ICU Missed Nursing Care Scale was （98.9±22.4） points. The items with the most deficiencies were psychological support，basic nursing，and rehabilitation training. The causes of ICU missed nursing care were primary reasons being absolute shortage of human resources，relative shortage of human resources，and communication factors. The regression analysis results indicated that the average number of patients per shift，whether the nurse was an ICU specialist，professional title，and hospital level were influencing factors of ICU nursing omissions，collectively explaining 24.4% of the total variation. Conclusion The level of missed nursing care in ICU in China is relatively high，with serious deficiencies in psychological support and basic nursing. It is suggested that nursing managers should optimize the allocation of human resources，strengthen nurse training，improve work shift arrangements，and enhance team collaboration to reduce missed nursing care and improve the nursing quality in ICU.