Objective To explore the barriers to implementing the Group Standard for Incontinence Associated Dermatitis （IAD） in critically ill patients, and to provide reference for formulating clinical management strategies. Methods A descriptive qualitative study was conducted. An interview schedule was developed based on the Theoretical Domains Framework （TDF）.Twenty-one nurses from Intensive Care Unit were selected for semi-structured interviews.Data were analyzed using content analysis. Results Three core themes across five domains were identified:insufficient professional competence of the practitioners （knowledge domain, and skills domain）, poor organizational climate （social/professional role and identity domain, and social influences domain）, and inadequate external support resources （environmental context and resources domain）. Conclusion There are many barriers to implementing the IAD Group Standard in critically ill patients.Managers should enhance professional competence of nurses, improve organizational climate, refine management mechanisms, and optimize the allocation of human and material resources, in an effort to advance the implementation of the IAD Group Standard.