Sitting position helps to improve respiratory function, but for those with poor sputum expectoration ability, regular prone position knocking back to promote sputum expectoration, and need to pay attention to the combination of drugs and other therapeutic measures. Pneumonia is most commonly seen in drinking, vomiting and aspiration, traumatic brain injury, etc. Due to the weakening or damage of the respiratory defense reflexes such as coughing, coughing up sputum, it is easy to be aspirated and not easy to be discharged after inhalation to form pneumonia. For pneumonia, sitting position or semi-recumbent position can be adopted to avoid aspiration. Meanwhile, for those who have difficulty in sputum discharge, turning over and knocking on the back can be done regularly to promote sputum discharge. In addition, active anti-infection treatment is also needed. It is recommended to carry out sputum bacterial culture and drug sensitivity test to choose sensitive antibiotics. Commonly used drugs include cefadroxil, piperacillin, cefoperazone and other antibiotics. For those who are combined with hypoxemia and arterial blood gas abnormality, the use of ventilator-assisted respiration is needed as appropriate. The above drugs need to be used under the guidance of clinicians.