Abstract:Objective：To investigate and analyze the influencing factors of pressure injuries and the implementation of existing preventive measures in the pediatric intensive care unit（PICU）. Provide a basis for the prevention and treatment of pressure injuries in children. Methods：Across-sectional survey was conducted on 702 children in a certain Grade A tertiaryhospital’s PICU from January to December 2020. Data about the characteristics of the patients，the assessment and characteristics of pressure injuries were collected and analyzed. Results：The incidence of pressure injury in children with PICU was 8.83%，and the degree of injury was mainly stage 1（90.32%）；the occipital area（38.46%）was the most frequent site of pressure injury in children，followed by the sacrococcygeal area（27.69%）. Tracheal intubation，impaired consciousness，low Braden Q score，limited mobility，limited perception，moist skin，friction and shear problems，nutritional deficiency，and insufficient tissue perfusion and oxygenation are pressure-related injuries Influencing factors. The type of disease has a certain degree of predictive value for PI，but it should be judged in combination with other factors.The use rate of pressure relief pads in PICU children has reached 100%，and the body positions were changed once every 2~3 hours. The proportion of children with pressure injury who used preventive decompression dressing was 95.16%，and the proportion of nutrition risk screening was 29.03%. Conclusion：There are many high-risk factors for pressure injury in children with PICU，and the injury sites are mostly concentrated in the occiput and sacrum. The clinical nursing should strengthen nutritional risk screening on the basis of existing measures. Further develop a PI risk assessment table covering more objective index items to achieve the purpose of preventing the occurrence of PI.