The Department of Pediatric Critical Care Medicine at Shanghai Children's Medical Center is dedicated to the treatment of critically ill pediatric patients (aged 29 days to 18 years), as well as related teaching and research activities. In 2011, it was designated as one of the first National Key Clinical Specialties by the Ministry of Health and the Shanghai Jiao Tong University School of Medicine Center for Pediatric Respiratory and Circulatory Critical Care. The department has achieved leapfrog development in clinical comprehensive strength, scientific innovation capability, international influence, and social service functions, and has become a first-class pediatric critical care department in China. Currently, the department treats over 1,300 critically ill pediatric patients annually, including severe cases from various pediatric medical and surgical subspecialties (excluding postoperative cardiac patients and neonates). 85% of these cases are classified as severe or extremely severe, covering conditions such as sepsis, acute respiratory distress syndrome, severe pneumonia, complications related to hematological malignancies (including stem cell transplantation and CAR-T cell immunotherapy), critical and complex congenital heart disease (preoperative), rare critical diseases, and perioperative management of liver transplantation. The case mix is comparable to that of international ICUs. Advanced critical care technologies employed include various invasive and non-invasive mechanical ventilation, fiberoptic bronchoscopy, electrical impedance tomography (EIT), critical care ultrasound, non-invasive and invasive hemodynamic monitoring, blood purification (CRRT + plasma exchange), extracorporeal membrane oxygenation (ECMO), thromboelastography, and multimodal brain function monitoring. Multidisciplinary team collaboration is emphasized, with specialized teams such as hematology-critical care, rehabilitation-critical care, and neurology-critical care, to optimize the diagnosis and treatment of critically ill children and ensure the management of complex and severe cases. The implementation of an integrated emergency-PICU treatment model for the resuscitation of all critically ill patients in the hospital has significant clinical implications and social benefits in reducing mortality and disability rates. The Department of Critical Care Medicine consistently adheres to a "patient-centered" approach, aiming for individualized and precise treatment, integrating the concepts of prevention, early warning, and protection throughout the process. In an era of "technology for good," medical humanities are woven into every aspect of care. Shanghai Children's Medical Center was the first institution in China to conduct standardized pediatric cardiopulmonary resuscitation training and the first to be authorized by the American Heart Association (AHA) as a Pediatric Advanced Life Support (PALS) training center. Several AHA training instructors, course directors, and regional course directors from the Department of Pediatric Critical Care Medicine undertake the primary training responsibilities. The department serves as the lead unit for standardized residency training in pediatric critical care in Shanghai, implementing tiered training and talent development. Physicians at the attending level and above typically have overseas study experience ranging from 3 months to 1 year, collaborating with institutions such as the Mayo Clinic and St. Jude Children's Research Hospital on research and multicenter studies, broadening perspectives, keeping pace with international trends, and achieving integrated development in clinical care, education, and research.