Sitting for a long time walking foot pain walking for a while without pain may be the foot pressure, ankle degeneration, plantar fasciitis, rheumatoid arthritis and other reasons. 1. Foot pressure: sitting for a long time will lead to local compression of poor blood circulation, thus causing symptoms of foot pain, generally after walking for a period of time, leg vasodilatation, blood circulation will be accelerated, the symptoms of foot pain slowly disappeared, generally without special treatment. 2. Degenerative changes of ankle joint: Age increase, injury, exertion, cold, obesity, immune disorders and other factors can cause degenerative changes of ankle joint. In different stages of the disease, ankle pain may appear after sitting for a long time, which can be gradually reduced with activities, and the pain will appear again after walking too much. 3. Plantar fasciitis: Plantar fasciitis is caused by aseptic inflammation of the tendons or fascia of the foot. The most common symptom is heel pain and discomfort. Pain may occur after a period of inactivity, and then decrease with activity. 4. Rheumatoid arthritis: Rheumatoid arthritis is a chronic, systemic disease with inflammatory synovitis of undetermined etiology. It is characterized by polyarticular, symmetric, invasive joint inflammation of the small joints of the hands and feet. The disease also presents with pain and stiffness in the feet, which can be alleviated with activity. There are other reasons for sitting for a long time walking foot pain walk for a while on the performance of the pain, if the persistence of non-relief, it is recommended that timely medical care, improve the examination to clarify the cause of the disease, in accordance with the doctor’s instructions for targeted treatment, so as to avoid delays in the condition.