The success rate of funnel chest surgery can now be basically 100%. Funnel chest surgery can simply be divided into two categories: the first is the traditional, or open, surgery, which was invented in the 1940s called Ravitch, so it is now always called Ravitch surgery. Simply put, it is to make an incision in the middle of the chest, find the location of the depression of the sternum, cut the depressed ribs on both sides, cut the sternum across, turn the depression inward and backward compression of the sternum, reverse it to the turtle shell, release the backward and inward compression of the heart and lungs, then fix the left and right after so that the backward compression of the depression becomes forward, and then connect the ribs or add another auxiliary or no auxiliary synthetic mesh or material to ensure the stability of the sternum. The second type of surgery was invented later by NUSS and was improved by Donald NUSS in the 1980s. Simply put, a custom-made or specific NUSS steel bar is used to pass behind the sternum, with no incision in front of the sternum, but only 1-2 small incisions in the axilla, and then the NUSS plate, after passing through the sternum, acts like a bridge to top up the backward depression of the sternum and bring it back to its normal position forward. These two procedures have been continuously improved and the incisions have become smaller and smaller. The success rate of the surgery is guaranteed and basically 100% is no problem.