When patients have sore legs, it may be caused by physiological factors, such as walking for a long time, strenuous exercise, standing for a long time, etc., or pathologic factors, such as lumbar intervertebral disc herniation, osteoporosis, and vascular diseases of the lower limbs. 1. Physiological leg pain: when patients walk for a long time, strenuous exercise, standing for a long time, it may cause muscle fatigue of both lower limbs, excessive metabolic products in the body, accumulation of lactic acid, which in turn produces the feeling of soreness in both legs. 2. Lumbar disc herniation: Lumbar disc herniation can lead to compression of the spinal cord and nerve roots, resulting in pain, weakness, numbness and other symptoms in the lower limbs, accompanied by pain in the lower back. 3. Osteoporosis: a metabolic disease caused by the loss and decline of bone mass, mostly seen in the elderly, often manifested as generalized weakness, limb pain, weakness and other symptoms, and in severe cases, hunchback and other phenomena. 4. Lower extremity vascular diseases: occlusive vasculitis, atherosclerosis, varicose veins of the lower extremities and other lower extremity vascular diseases, due to the obstruction of the blood vessels of the lower extremities, blood circulation disorders, may also cause soreness of the legs. Sore legs can also be caused by many factors, such as osteophytes, joint cysts, etc. It is recommended that patients seek timely medical examination to clarify the cause of the targeted treatment, and pay attention to rest in life to avoid prolonged walking or strenuous activities.