Objective To explore the effectiveness of FOCUS-PDCA(find,organise,clarify,understand,select,plan,do,check and act)mode in prevention and treatment of incontinence-associated dermatitis(IAD)in emergency intensive care unit(EICU),and to reduce the incidence of IAD.Methods A pre-post control study design was employed in this study.Inpatients admitted to the EICU of the hospital between 1st January and 31st December 2022 were enrolled as study subjects.A total of 169 patients in EICU between January and June 2022 were assigned as a control group,while 197 patients in EICU between July and December 2022 as an trial group.Patients in the control group received conventional quality management,while those in the trial group were treated with the FOCUS-PDCA mode.The two groups were compared in terms of incidence of IAD,the knowledge,trust and behaviour scores of the nurses,and satisfaction from the communications with nurses before and after implementation of the FOCUS-PDCA mode.Results All patients in the two groups had completed the study.Following the implementation of FOCUS-PDCA mode,patients in the trial group exhibited a significantly decrease in incidence of IAD from 10.06%(trial group)to 1.52%(control group),significant increase of scores on the IAD knowledge,behaviour and satisfaction from communications with the nurses,from(36.07±3.98),(16.56±2.15)and(25.15±5.21),to(38.59±3.72),(18.07±1.66),and(30.67±5.84),respectively(all P<0.05).Conclusion FOCUS-PDCA mode can effectively decrease the incidence of IAD,enhance the IAD knowledge and behaviour of nurses and gain satisfactions from communication with nursing staff and clinical quality,thereby improving therapeutic outcomes.