The clinical manifestations of severe pneumonia generally include central nervous system abnormalities, respiratory system abnormalities, circulatory system abnormalities and other symptoms, and it is recommended that patients with serious conditions should seek medical treatment in time. 1. Abnormalities of central nervous system: Inflammation of the lungs of patients with severe pneumonia can lead to lesions of the central nervous system, resulting in symptoms such as dizziness, headache, low blood pressure, confusion and coma. 2. Abnormalities of respiratory system: patients with severe pneumonia may have abnormal symptoms of respiratory system, including coughing, coughing up sputum, cyanosis, dyspnea, etc., due to the large area of pneumonia or the strong virulence of infected pathogens, which may affect the respiratory circulation. 3. Circulatory system abnormalities: severe pneumonia due to severe hypoxia and toxemia, in addition to respiratory system abnormalities, may also lead to circulatory system abnormalities, such as chest tightness, panic, heart failure, shock, myocarditis and so on. The above symptoms should be taken seriously, and timely medical treatment is recommended. Usually pay attention to the regularity of work and rest, avoid staying up late, smoking, drinking and other bad habits, try to eat a light diet, avoid spicy and stimulating food.