Wearing a knee brace for osteoarthritis has a role to play. Osteoarthritis is a relatively common degenerative arthritis in the elderly, which is characterized by the loss of articular cartilage, narrowing of the joint space, and pain after activity. Wearing a knee brace can keep the knee joint warm and prevent it from getting cold. It can also limit the excessive activity of the knee joint, which is conducive to the protection of the knee joint. Therefore, wearing knee pads for osteoarthritis has a certain role. Osteoarthritis patients wearing knee pads can only play a certain role in assisting, daily should reduce heavy physical activities, avoid running, mountain climbing and other sports, to protect the knee joint. It is recommended that patients with osteoarthritis go to the hospital in time, follow the doctor’s instructions for standardized treatment, to avoid delaying the condition.