There are various methods of sputum expulsion, as follows: 1, effective deep breathing and effective coughing to expel sputum; 2, nebulized inhalation of appropriate medication to dilute sputum, so that sputum is expelled; 3, giving chest percussion or chest vibration to expel sputum, so that sputum vibration in the chest cavity, easy to be expelled; 4, if the patient’s condition is critical, sputum is more viscous, coughing up, need to use a suction tube to suck out the sputum; 5, positional drainage, mostly used for Patients with lung abscess and bronchial dilatation can have their sputum discharged through appropriate body position. Postural drainage is mainly adapted to patients with lung abscess and bronchial dilatation; expectoration by chest shaking or expectoration by back patting is suitable for patients with weak body and weak cough.