Pneumonia is mainly caused by bacterial, viral, fungal and other pathogenic microbial infections that cause inflammation of the small bronchi, alveoli and interstitial spaces of the lungs, clinically causing fever, coughing, coughing, blood in the sputum, and in severe cases, chest pain and difficulty breathing. If not actively treated, it may also cause infectious shock in severe cases, mainly irritability, confusion, lethargy, and hypotension, which may also affect the heart and cause tachycardia and arrhythmia. If not actively treated, it may also cause chronic inflammation and lung abscesses, which can seriously affect the health of the patient. When suffering from pneumonia it needs to be treated aggressively with sensitive antibacterial drugs, and complications and chronic infections need to be prevented.