Abstract: Continuous arterial blood pressure monitoring by radial artery catheterization is an indispensable monitoring technique for children in the perioperative period and critical care, and the factors that affect the success of catheterization have always been the focus of clinical researches. This study reviewed the research progress on the factors related to the success of radial artery catheterization in children from the perspectives of operator's factors, patient's factors, and operation equipment and materials.