Leg pain in older people may be caused by lumbar disc herniation, myofasciitis, arthritis, lower limb vascular lesions and other factors. 1. Herniated lumbar intervertebral discs: after ageing, people may suffer from herniated lumbar intervertebral discs, which may compress the nerves innervating the lower limbs and cause radiating pain in the lower limbs, as well as lumbar pain and numbness in the lower limbs. 2. Myofasciitis: In cold weather, the elderly do not pay attention to the lower body to keep warm, resulting in repeated exposure to cold in the lower body, may induce myofasciitis, which will lead to localized pain in the thighs. 3. Arthritis: If the joints of the lower limbs show symptoms of pain, it may be caused by various types of arthritis, such as degenerative osteoarthritis, gouty arthritis, rheumatoid arthritis, and so on. 4. Lower extremity vascular lesions: for example, varicose veins of the lower extremities, lower extremity arteriosclerosis occlusive disease, etc., which can lead to localized obstruction of blood flow, will cause pain in the lower extremities, which may also be accompanied by fatigue, swelling and other symptoms. Older people with leg pain that lasts for a longer period of time and affects their daily life are advised to seek medical attention for appropriate examination and treatment.