【Abstract】 [Objective] Investigate the effect of platelet-rich plasma (PRP) on internal fixation of patella fractures. [Methods] Fifty patients with patella fractures were selected and divided into PRP group and no PRP group by random drawing method, 25 patients in each group. The control group without PRP group was treated by routine surgery and the observation group PRP group was compared with two groups respectively for preoperative general data, perioperative data, follow-up data and imaging data. [results] The VAS scores, Bostman scores, and knee mobility of the PRP group at 3, 6, and 12 months after surgery were better than those of the group without PRP (P < 0.05). The operative time, incision length, intraoperative blood loss, time to ambulate, incision healing, hospital stay, early VAS score, time to full weight bearing activity, radiographic fracture healing, and patellofemoral K-L grade in the PRP group were not significantly different from those in the group without PRP (P > 0.05). [Conclusion] Adjuvant treatment with PRP is beneficial to promote postoperative recovery of patella fractures, create favorable conditions for knee functional recovery, reduce the degree of postoperative pain, and improve the functional outcome of the knee, which has clinical promoting application value。