Left foot pain is considered to be caused by physiological reasons, gouty arthritis, plantar fasciitis, lumbar disc herniation and other conditions. 1. Physiological causes: such as wearing shoes too tight, walking too much. Wearing shoes too tight will cause the foot and shoes extrusion friction, walking too much will cause foot strain, and cause pain. 2. Gouty arthritis: gouty arthritis is due to high blood uric acid concentration, which leads to the precipitation of urate crystals, when deposited in the joints and tissues around the joints, it will cause inflammatory reaction, which causes pain in the left foot. 3. Plantar Fasciitis: Plantar fasciitis is the aseptic inflammation of the plantar fascia due to chronic strain injury, which causes pain in the sole of the left foot. 4. Lumbar intervertebral disc herniation: if the patient has lumbar intervertebral disc herniation, when the protruding nucleus pulposus tissue, for the sciatic nerve caused by compression, it will cause radiating pain in the left foot. Visible causes of left foot pain are very many reasons, such as exclude physiological factors, the pain has been unable to relieve, you need to go to the hospital to further identify the cause of the disease, and then targeted treatment.