Minimally invasive thoracic deformity surgery often requires the use of steel bars. After these bars are placed in the chest wall, they need to be firmly fixed. In the past, most of the fixation techniques needed special fixation plates. Although these methods have certain advantages, their disadvantages are more impressive. We have invented a technique specially used for steel bar fixation. This technique is simple, practical and easy to operate. We used it routinely in all kinds of thoracic deformity operations and achieved satisfactory results. In the past few years, we have carried out thoracic deformity surgeries in more than 300 hospitals in China, and this technique is adopted in all our operation. Because of the obvious advantages, it is unanimously recognized by the peers. It has become a popular technique in chest wall surgery circle. In order to better standardize the naming of this technique, we named it Wang technique. In this paper, the specific contents of this technique are introduced in detail through a case of Wung procedure on pectus excavatum.