▎ 摘　　要

NOVELTY - Platelet-rich plasma (PRP) gel comprises freeze-dried powder, PRP solution, Aloe veraextract, calcium salt and gelatin, where the freeze-dried powder is obtained by mixing silk fibroin solution with chitosan solution and freeze drying the mixture. USE - As PRP gel. ADVANTAGE - The PRP gel has stable repairing effect and short repairing period. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for method for preparing the PRP gel, which involves mixing A.veraextract, PRP solution and freeze-dried powder to obtain first mixture, dispersing gelatin in water, mixing at 30-40℃ to obtain gelatin gel and mixing the first mixture with the gelatin gel to obtain the PRP gel.