To investigate the potential classification and influencing factors of wound arteriovenous catheterization and maintenance competence among burn unit nurses，and propose targeted training countermeasures.

Nurses from 15 burn centers across 10 provinces and municipalities including Shanghai， Jiangsu， and Fujian were recruited as study subjects through convenience sampling in August 2025. The general information questionnaire and the evaluation scale for the ability of arteriovenous catheterization and maintenance of burn wounds were used for the investigation. The Latent profile analysis， univariate analysis， and multiple Logistic regression analysis were employed to identify the latent profiles and influencing factors of wound arteriovenous catheterization and maintenance competence among burn unit nurses.

The competence of burn unit nurses in wound arteriovenous catheterization and maintenance can be categorized into low-level group and high-level group. Professional title nurse practitioner （OR=2.427，95%CI：1.097-5.376，P=0.028）， years of experience （5-10 years：OR=3.744， 95%CI：1.692-8.285，P=0.001；11-20 years：OR=4.773，95%CI：2.093-10.885，P<0.001）， participation in relevant training on arteriovenous catheterization and maintenance of burn wounds （OR=1.789，95%CI：1.088-2.940，P=0.022）， and prior clinical experience in arteriovenous catheterization and maintenance of burn wounds（OR=3.499， 95%CI：1.906-6.424，P<0.001） were identified as significant factors associated with the potential classification of wound arteriovenous catheterization and maintenance competence among burn unit nurses.

The competence of burn unit nurses in wound arteriovenous catheterization and maintenance is at a moderately high level， yet exhibits heterogeneity. Targeted training programs should be developed according to the distinct potential categories to enhance the overall proficiency in arteriovenous catheterization and maintenance of wounds among nurses.