PRP therapy, also known as platelet-rich plasma injection therapy, is useful for treating osteoarthritis, but may not necessarily be effective for other types of arthritis as well. 1. PRP therapy is a relatively new treatment method in China, which can be used for the treatment of osteoarthritis, intra-articular cartilage injury, acute and chronic trauma, tendon injury, bone fracture, bone nonunion, bone defect and other diseases, so PRP therapy has some therapeutic effect on osteoarthritis. 2. PRP therapy has clear indications and contraindications, and may not be effective for other types of arthritis besides osteoarthritis, and sepsis, abnormal coagulation function, ulceration of the joint puncture site and other contraindications should be ruled out before treatment, and the specific treatment plan should be formulated according to the specific condition of the patient. It is recommended that patients with arthritis who need PRP therapy should go to regular hospitals for consultation, and after clarifying the cause, comprehensive treatment should be carried out under the guidance of doctors, and do not use medication on their own.