Objective To analyze the value of dynamic assessment combined with dermatological nursing plan in the prevention and treatment of incontinence-associated dermatitis in intensive care unit (ICU). Methods A total of 60 ICU patients admitted to Luzhou TCM Hospital from September 2022 to March 2025 were selected and divided into the control group and the observation group according to the random number table method, with 30 patients in each group. The control group received conventional nursing, and the observation group received dynamic assessment combined with dermatological nursing plan. The incidence of incontinence-associated dermatitis, ICU hospitalization time, total hospitalization time and family satisfaction were compared between the two groups. Results The incidence of incontinence-associated dermatitis in the observation group (3.33%) was lower than that in the control group (23.33%) (P <0.05). The ICU hospitalization time and total hospitalization time in the observation group were shorter than those in the control group (P <0.05). The family satisfaction in the observation group (96.67%) was higher than that in the control group (80.00%) (P <0.05). Conclusion Dynamic assessment combined with dermatological nursing plan has definite application value in the prevention and treatment of incontinence-associated dermatitis in ICU. It can not only effectively prevent the incidence of IAD, but also shorten the prognosis cycle of patients, promote their recovery, and help to improve family satisfaction.