The possible reasons for sleeping with sore feet at night include cold feet, varicose veins in the lower limbs, herniated lumbar discs, rheumatoid arthritis and so on. 1. Cold feet: it may be due to the patient’s foot muscles being stimulated by cold, tension and spasm occur, thus producing the symptoms of soreness. 2. Varicose veins of the lower limbs: If you suffer from serious varicose veins, it may lead to the obstacle of venous return of the lower limbs, and ischemia and hypoxia of the lower limbs, which will be manifested as soreness and swelling of the palms of the feet when you sleep at night. 3. Herniated lumbar disc: If you have a herniated lumbar disc, the nerve root is compressed, which may cause soreness and swelling of the soles of the feet when you sleep at night. 4. Rheumatoid arthritis: Rheumatoid arthritis, if it occurs in the joints of the lower limbs of the patient’s feet, can also induce soreness and swelling of the feet and other symptoms. Sore feet at night may also have other reasons, it is recommended to go to the regular hospital in a timely manner, improve the relevant examination, clear cause, under the guidance of the doctor for targeted treatment or treatment.