Knee and elbow joint soreness may be related to exertion, osteoarthritis and other reasons. Engaging in heavy physical labor for a long time will cause fatigue of the elbow and knee joint capsules and ligaments, and repeated friction of the articular cartilage will lead to minor injuries, causing symptoms such as soreness and pain in the knee and elbow joints. If prolonged strain, repeated friction of articular cartilage will gradually become thin or even fall off and disappear, and osteoarthritis will be formed. For example, elbow flexion and extension pain can not be completely straightened and flexion, knee walking, squatting pain symptoms worsened, joint deformation and so on. If the symptoms of knee and elbow joint pain and swelling occur, it is recommended that the patient go to the hospital for medical examination to clarify the cause of the disease and then carry out the appropriate treatment.