Double leg soreness and weakness of the soles of the feet, may be related to strenuous exercise, may also be due to lumbar spine lesions, acute cerebrovascular disease and other reasons. 1. Strenuous exercise: especially the usual small amount of exercise, suddenly strenuous exercise, such as long-distance walking, running for a long time, etc., easy to lead to excessive accumulation of lactic acid in the leg muscles, it may cause legs weak, numbness of the soles of the feet. 2. Lumbar spine lesions: commonly seen in lumbar disc herniation, lumbar spinal stenosis and other diseases, may lead to sciatic nerve root compression, resulting in sensory and motor dysfunction of the compressed nerves, which may cause weakness and numbness of the soles of the legs, and may be accompanied by radiating pain in the lower extremities, lumbago and other symptoms. 3. Acute cerebrovascular disease: commonly seen in acute cerebral hemorrhage, acute cerebral infarction and other diseases, due to the obstruction of blood flow in the local brain tissue or hematoma compression, resulting in damage to the cerebral nerves in the area, inducing cerebral dysfunction, which may lead to weakness and numbness of the soles of the feet, which may be accompanied by symptoms such as dizziness, headache, and unfavorable speech. The weakness of the legs and the numbness of the soles of the feet may also be caused by other reasons. If the symptoms continue to be unrelieved, attention should be paid to go to a regular hospital as soon as possible, and after completing the relevant examinations and diagnosing the causes, the treatment will be guided by the doctor.