A sputum embolus is a thick, sticky sputum that cannot be expelled in a timely manner and becomes blocked in the airways of the lungs. The formation of sputum embolism is usually due to increased airway secretions and reduced ability to expel sputum. Various chronic lung diseases such as chronic bronchitis, chronic obstructive pulmonary disease, bronchiectasis, lung abscess, pneumonia, etc. can lead to increased sputum secretion, airway obstruction, airway structural changes, trauma, etc. can make the ability to expel sputum weakened, the secretion of the long term retention of the airways, the water is constantly absorbed, the sputum viscous sputum embolism. When sputum embolism occurs, patients will have cough, cough up sputum, sputum is not easy to cough up, dyspnea and other manifestations, sputum is not easy to discharge is not conducive to the recovery of the disease, and even aggravate the condition. When there is sputum embolism, in addition to the active treatment of the primary disease, can actively encourage the patient to turn over and pat the back to cough up sputum, the use of acetylcysteine, aminoglutethimide, carboxymetholestane and other drugs to promote the dilution of sputum and discharge, if necessary, can be given to suction, bronchoscopy and other means of irrigation. We recommend that you consult a doctor to determine the cause of the illness and follow the doctor’s instructions.