Foot swelling has a variety of causes, walking tired can also be foot swelling. General symptoms on the feet can be divided into neurological factors, vascular factors and orthopedic factors, motor system factors, as follows: 1, orthopedic factors, if there are pressure changes on the bottom of the foot, such as foot deformities, bunions, flat feet, walking more natural swelling, pain, and calcium deficiency can be caused; 2, neurological factors, generally can be divided into peripheral neuropathy, such as peripheral neuritis caused by diabetes. Peripheral nerve damage or orthopedic lumbar spine, sciatic nerve compression caused by abnormal sensations on the foot, some can also be manifested as swelling; 3, vascular factors, generally poor venous return, causing foot swelling, then you need to elevate the limb, swelling will be relieved, sleep on the cushion, sitting on the sofa also put the leg cushion up. If necessary, go buy a pair of medical elastic socks, can also effectively relieve the symptoms.