The need for surgery for funnel chest is related to a number of factors such as age and degree of deformity, and needs to be determined in a comprehensive manner. 1. Situations requiring surgery (1) If the funnel chest is moderate to severe, or if the funnel chest has affected the cardiopulmonary function, surgery is usually needed. (2) If it affects the cardiopulmonary function, body shape and appearance, early surgical treatment is also recommended. 2. Cases that do not require surgery: (1) Mild deformity: i.e. funnel index <0.2, generally no treatment is needed. (2) Adult funnel chest: if the deformity is not serious and there is no impairment of cardiopulmonary function, etc., and at the same time, there is no demand for aesthetics, you can generally choose not to do surgery. It can be seen that the need for surgery for funnel chest is related to a variety of factors, and it is recommended to choose the appropriate treatment under the guidance of your own and your doctor.