The back of the foot pain for no reason walking more pain but not swelling may be dorsalis pedis fasciitis, lumbar disc herniation, gout and other factors, the patient should consult a doctor in a timely manner, to clarify the cause of the disease. 1. Dorsalis pedis fasciitis: chronic aseptic inflammation of the fascia or tendon of the back of the foot caused by strain, immunity and other factors, the patient will have pain in the back of the foot for no reason, and the pain is aggravated by walking for a long time, and this kind of people can take ibuprofen and other medicines orally when the pain is serious. 2. Lumbar disc herniation: degenerative lesions of the lumbar spine caused by the nucleus pulposus protrudes and compresses and stimulates the nerve root and the surrounding tissues, the patient will have lumbar pain, leg pain, dorsalgia, intermittent claudication, and the pain will be aggravated by the activity, this kind of group of people should pay attention to the rest, and take ibuprofen when the pain is serious, and also can be physically treated. 3. Gout: Redness, swelling, heat and pain in the joints caused by high concentration of uric acid in the blood, which occurs on the back of the foot, and develops suddenly at midnight or early in the morning. During the acute attack period, you can use colchicine, ibuprofen and other medicines to relieve the pain quickly, and you should pay attention to correcting the bad living habits in your daily life. The above drugs and treatments should be carried out under the guidance of a doctor. Related patients are advised to consult a doctor in time and follow the doctor’s instructions.