Regarding the current conscription system, a mild case of pectus excavatum does not affect enlistment. However, it is known that the sternum is positioned directly in front of the heart and lungs in a normal individual. In children or patients with pectus excavatum, the inward and backward indentation of the sternum can directly compress the heart or lungs. In severe cases, this compression can prevent the heart from expanding effectively and fully, severely compressing and deforming the heart, and even affecting the opening and closing of the valves within the heart, leading to incomplete valve closure. As a result, the cardiac and pulmonary functions of such patients can be impacted to a certain extent, especially in those with moderate or severe pectus excavatum. Without timely correction, this condition can impair the patient's ability to perform physical activities, particularly strenuous labor or training exercises in the military, impacting both heart and lung functions. In addition to the physical aspects, there is also a social impact within the military. Due to the deformity of the chest cavity, patients might face misunderstanding or discrimination from others in their unit, which can damage their self-confidence and even lead to feelings of inferiority.