A bunion is a forefoot deformity in which the bunion is deviated outward and accompanied by symptoms. The incidence is 5-7%, with some thought to be higher. The causes of bunions are genetic and shoe wear. The bunion is caused by the formation of a bursa on the medial side of the first metatarsal head, which forms a bursitis by friction with the shoe surface. Since bunions are often accompanied by lesions in other parts of the foot, such as hammertoes, metatarsalgia, bursitis of the little toe, flat feet, etc., they are also called bunion complex or bunion syndrome. After a bunion, the shape of the foot changes, affecting the aesthetics of the foot and making it difficult to choose the right shoe. But more importantly, the structural changes of the foot after bunion and the secondary pain have a great impact on the basic weight-bearing and walking functions of the foot. However, bunion is not a simple lesion, the diversity of different deformities and pathological changes and the different requirements of the patient make a variety of options in treatment. Surgery for bunions is not a major procedure, but it is by no means a simple one, and improper choices can lead to unsatisfactory results and often recurrence. There are many different surgical options, with about 150 different procedures. No single surgical procedure will solve all problems, so several or a set of appropriate treatments will be chosen and individualized for the individual to receive satisfactory results. The simple and fast methods often fail to achieve results.