Joint pain after exercise may be due to exercise time is too long or too much exercise caused by joint strain, may also be the patient’s own osteoarthritis and other diseases caused by. 1. Joint strain: Exercise intensity is too large, too long, etc., can be to the time when the joints and the surrounding ligaments, muscles, joint capsule and other soft tissues of local congestion, edema, and muscle spasm, etc., which can lead to local lactic acid and other acid metabolites accumulation, which in turn causes joint pain, soreness, swelling and other symptoms after exercise. 2. Osteoarthritis: patients with osteoarthritis, when strenuous or prolonged exercise can cause articular cartilage in a certain degree of wear and tear, further aggravate joint pain, swelling, soreness and other symptoms, and in severe cases, can also lead to joints popping and limited activities and other symptoms. Joint pain after exercise may also be caused by meniscus tear, muscle strain, etc. It is recommended to consult a doctor for a clear diagnosis and targeted treatment under the guidance of the doctor.