The exact duration of infusion for pneumonia patients is related to the severity of the patient’s disease and individual circumstances, and cannot be generalized. Pneumonia is mostly caused by bacterial infection in the lungs, and can be divided into mild pneumonia and heavy pneumonia. The clinical symptoms of patients with mild pneumonia are mainly fever, cough, sputum, chest tightness or chest pain. After reasonable application of antibiotics and about 1 week of intravenous injection, the symptoms will be relieved. If CT suggests that most of the lung inflammation has been absorbed, it can be changed to oral medication for consolidation. For severe pneumonia, the patient’s clinical symptoms are more severe and the situation is more dangerous. Recurrent high fever, dyspnea, chest tightness and shortness of breath may occur. If combined with underlying diseases such as hypertension, coronary artery disease, heart disease, etc., infusion treatment may take longer. Therefore, patients with pneumonia should visit the respiratory medicine department of the hospital promptly, pay attention to rest, match their diet reasonably, drink more water and eat nutritious and easily digestible food.