Rheumatoid arthritis, osteoporosis, osteoarthritis, etc. can be considered. 1. Rheumatoid arthritis: symmetrical swelling of joints, migratory pain, limited joint movement and morning stiffness can be diagnosed clearly through the rheumatism test. 2. Osteoporosis: It is caused by excessive loss or insufficient intake of calcium, which is mainly characterized by generalized joint pain, and can cause severe cramps and spontaneous fracture, and can be clearly diagnosed through bone densitometry. 3. Osteoarthritis: joint degeneration, hyperplasia, joint space narrowing caused by one side of the joint pain, due to the other side of the joint compensation, weight-bearing increase in the pain caused by both sides of the alternating. Therefore, it is best to go to the hospital for a clear diagnosis and further treatment of joint pain on the left side of the joint and pain on the right side of the joint.