The danger of post-operative funnel chest is that unsatisfactory post-operative orthopedic shape of funnel chest may still cause compression of the heart and lungs, resulting in chest tightness and shortness of breath after activity. In addition, secondary changes of the spine and scoliosis may occur after surgery. To prevent these complications, it is necessary to frequently observe whether the fixed plate slips and shifts after surgery and whether the spine is scoliosis, and to take timely measures to correct them. If the harm of funnel chest has already occurred, such as unsatisfactory funnel chest orthopedics, remedial treatment with a funnel chest sucker can be used. The principle of funnel chest sucker is to suck up the sunken sternum and rib cartilage, and after one year of treatment, the sternum and rib cartilage can be shaped to change the shape of the thorax.