Pulmonary calculi, also known as bronchial calculi, are often characterized by cough, sputum, fever, bloody sputum, hemoptysis, wheezing, and dyspnea, and are caused by bronchial irritation and obstruction. In a small number of patients, serious complications such as hemoptysis, bronchoesophageal fistula, and in some cases, even stones, are characteristic clinical manifestations of bronchial stones. For small stones without clinical symptoms and appearing in the peripheral airways, they can be closely observed and followed up regularly. For patients with severe complications, bronchoscopic extraction or surgical removal of stones is an option.