Lung stones are stones in the lungs deposited in the alveoli, there are many fine stones in a diffuse distribution, alveolar microcolithiasis and bronchial stones are possible. The cause of the disease is not known, and symptoms such as coughing and dyspnea may occur. The etiology of lung stones is less clear at present, and there is usually a familial predisposition, mainly autosomal recessive, but it is not an infectious disease. The main symptoms of lung stones are usually dry cough, chest tightness and shortness of breath, dyspnea, hemoptysis, etc. Lung function may continue to decline. If the course of the disease is long, chronic pulmonary heart disease may develop, and in severe cases, respiratory failure may even occur. Patients with lung stones are generally difficult to treat, there is no specific treatment, and lung transplantation is possible for severe lung stones.