Platelet rich plasma (platelet rich plasma, PRP) is a blood component with high concentration of platelets separated from whole blood by centrifugation. Because PRP is rich in platelets and releases a large number of growth factors, cytokines and antimicrobial peptides and other bioactive substances after activation, it can promote cell proliferation, differentiation, matrix synthesis and induce cell migration and adhesion, thereby accelerating angiogenesis, generation and tissue regeneration to achieve the purpose of rapid repair of damaged tissues. PRP is widely used in trauma repair, such as oral and maxillofacial surgery, orthopedics, ophthalmology, burns, plastic surgery, and chronic ulcers. It can effectively improve the hemostatic effect, shorten operation time, reduce postoperative swelling, and promote wound healing. And it is of great value to trauma repair and tissue reconstruction.