Lung spasm is generally referred to as bronchospasm, commonly seen in allergies, drug stimulation, and other various causes of bronchospasm episodes, need to give bronchodilators, glucocorticoids and other drugs to relieve the symptoms of bronchospasm. 1. Causes: allergy, drug stimulation, hypoxia, acute attack of bronchial asthma, poisoning, smoking and other causes of bronchial smooth muscle abnormal contraction caused by bronchospasm symptoms, which can cause airway narrowing, hypoxia, irritating cough, chest tightness, dyspnea, facial cyanosis and other symptoms. 2. Treatment: nebulized bronchodilators such as salbutamol, terbutaline, ipratropium bromide, etc., nebulized or intravenous application of glucocorticosteroids such as budesonide, methylprednisolone and so on. In conclusion, the occurrence of pulmonary spasm requires prompt medical attention and treatment of the cause under the guidance of a specialist. The above medications should be used under the supervision of a physician.