In the wave of first aid knowledge popularization and skill training, the trauma simulator of cardiopulmonary resuscitation (CPR), as an advanced teaching tool, is gradually becoming an important bridge connecting theory and practice and enhancing public awareness of first aid. Through highly simulated design and functions, the simulator aims to make first-aid knowledge more than just words on a book, but a valuable treasure that can be deeply rooted in people's hearts and transformed into practical skills.