The right leg is sore while the left leg is fine may be caused by poor posture, possibly due to work reasons need to sit or stand for a long time, resulting in local muscle pressure or long-term tightness in the right leg, which in turn will appear edema, soreness and other symptoms. Local heat can be applied to promote blood circulation and relieve discomfort. If it continues not to improve, you also need to be alert to disease factors that lead to common diseases, including lumbar spine disease, right leg lesions, etc.: a. Lumbar spine disease: common is lumbar disc herniation. Injury to the intervertebral disc, the fibrous ring, and the posterior longitudinal ligament, the disc presses against the posterior longitudinal ligament, causing the disc and the posterior longitudinal ligament to protrude posteriorly or laterally at the same time, and the protrusion to the right side is called right-sided disc protrusion. The clinical manifestation is pain in the lower back and radiating pain in the right leg, which is aggravated by coughing and sneezing. It can be detected by CT and MRI. Second, right leg lesion: long-term stimulation of the right leg, such as overexertion, trauma, etc., resulting in inflammation, thrombosis, varicose veins, etc., manifested as swelling and soreness of the right leg. If this symptom appears for a long time, it is recommended that patients go to the hospital for examination and treatment. 1, right knee joint diseases: such as osteoarthritis of the right knee, meniscus injury, etc., due to the stimulation of inflammation will appear swelling and pain of the left knee, the right leg may be affected with soreness; 2, right hip joint diseases: such as osteoarthritis of the right hip joint, tearing of the right hip joint, and even ischemic necrosis of the right and left hip head, etc. Diseases may appear soreness of the right leg; 3, right lower limb vascular disease: common right lower limb venous thrombosis, right lower limb varicose veins and other diseases, there is poor local blood circulation, thus appearing soreness of the left leg.