Sleeping at night shows soreness of the feet for the following reasons: 1, the muscles are subjected to wind and cold, resulting in spasm and pain in the calf gastrocnemius muscle; 2, poor blood in the lower limbs, patients with varicose veins and atherosclerosis mainly show ischemia in the lower limbs, so at night the vagus nerve is excited, especially easy to reflect the soreness of the legs and feet; 3, gout or rheumatoid, if it is gout, rheumatoid complications The joints of the lower extremities can also trigger soreness and painless discomfort in the legs; 4, osteophytes, osteophytes of the knee and ankle joints manifest as pain in the ankle, and radiation causes the entire calf muscles to show soreness and painful discomfort. The appearance of soreness and pain, you should go to a medical institution for timely consultation to clarify the specific causes, and at the same time, you can give local wet and hot compresses, baking lamp, microwave, massage physiotherapy and so on, which can help relieve the symptoms of soreness and pain.