Four common symptoms: 1, foot bunion deformity, local pain, affect walking, the emergence of bursitis, local ulceration, infection. 2, foot bunion, rotational deformity. The second toe extrudes toward the back, forming a hammer finger, and the forefoot becomes wider. 3.The skin of the metatarsal surface of the second and third metatarsal heads is increased due to weight bearing and callus is formed. 4. The skin of the protruding part of the first metatarsophalangeal joint thickens and even becomes red and swollen to produce bunions. Four stages: 1, bunion reversible stage: bunion about 10 degrees, affects the aesthetics, no pain, palm of the foot has a slight callus, will not directly affect walking, wearing high heels will cause pain. 2, bunion contracture stage “bunion 10-20 degrees, joint and ligament inflammation, the first and second toes obviously squeezed, the palm of the foot obviously widened, the sole of the foot callus obvious, long time walking easily cause bunion joint pain and pain in the palm of the foot. 3, bunion serious stage “bunion 20-40 degrees, toe overlap, transverse arch collapse, corns, foot pad, flat feet, heel pain. It is difficult to balance the force on both feet, which seriously affects standing and walking. 4, bunion deformity stage: bunion more than 40 degrees, toe mission end, bunion serious overlap, toe not force, arch collapse, difficult to walk, the palm of the foot directly bear toe part of the pressure, the sole of the foot calluses, the feet serious error negative force, the joints are difficult to coordinate operation, resulting in human life standing negative force line change, causing knee inflammation back pain, etc.