Flat chest can be corrected by the following methods: 1. If the flat chest is caused by lung inflammation, anti-infection treatment with sensitive antibiotics is often required, which can relieve the clinical symptoms of flat chest. 2. If the flat chest is caused by tuberculosis or tumor, anti-tuberculosis drugs and anti-tumor drugs are required, and sometimes surgical resection treatment is also required. 3. If the treatment is ineffective, or even the formation of funnel chest, it needs to be corrected by surgical treatment. Surgical treatment can restore the normal thorax and avoid the continuous pressure on the heart and lungs, which affects the cardiopulmonary function. Therefore, through the above methods, flat chest can usually be corrected. Patients should also pay attention to maintain good health habits to avoid the above-mentioned lesions and prevent the development of flat chest.