Arm pain and leg pain are commonly caused by the following reasons: First, muscle strain, prolonged participation in physical labor or prolonged standing can lead to strain on the muscles and joints of the arms and legs, and can form fascial inflammation, patients will show clinical symptoms of arm and leg pain, mostly soreness and swelling, after massage and rest symptoms will be relieved. Secondly, in the case of elderly patients, most of them are suffering from osteoporosis, which will also cause clinical symptoms of pain in the limbs, involving muscles and joints, and can be relieved by calcium and vitamin D supplementation. Third, patients with thyroid dysfunction and parathyroid dysfunction can lead to hypocalcemia, which can also cause muscle pain symptoms and may involve the extremities. Therefore, patients with pain in the extremities should be diagnosed and treated early to avoid recurring symptoms that can affect normal life and work.