Sternal pain is generally considered to be caused by intercostal neuralgia or lung disease, etc. It does not usually cause numbness in the soles of the feet, and there is not much correlation between the two. If it is numbness of the soles of the feet, consider peripheral neuritis, pyriformis syndrome, lumbar disc herniation or lumbar spinal stenosis and other causes. 1. Peripheral neuritis: common in diabetic patients, due to peripheral nerve dystrophy, resulting in peripheral neuropathy, resulting in numbness and pain in the soles of the feet. 2. Piriformis syndrome: due to the pressure of the piriformis muscle to the sciatic nerve, it will cause pain in the buttocks, and reflect to the legs and feet, which will cause numbness and pain in the soles of both feet. 3. Lumbar disc herniation: If the lumbar disc protrudes backward and stimulates the nerve or nerve root, it can lead to sensory abnormalities in the innervated area, such as numbness and pain in the soles of both feet. 4. Lumbar spinal stenosis: If the lumbar spinal stenosis compresses the cauda equina nerve or nerve root, it will cause numbness and pain on the soles of both feet. Therefore, the phenomenon of numbness of the soles of the feet may be caused by a variety of reasons, it is recommended to go to the regular hospital as soon as possible to check, clear triggering causes, and then actively carry out targeted treatment.