Improvement of pneumonia in children occurs when respiratory and systemic symptoms diminish and gradually subside. Community-acquired pneumonia in children usually improves after about 1 week of treatment, as evidenced by a gradual decrease in respiratory symptoms, relief of shortness of breath, reduction of sputum, and a decrease in the frequency and frequency of coughing. Hospital-acquired pneumonia, on the other hand, tends to be relatively difficult to treat and may often take longer, and may be characterized by a reduction in coughing and sputum production, a decrease in the frequency of fever, and even temperature control. Most children with pneumonia will have systemic symptoms. During the improvement period, the fever will subside, the body temperature will be normal, the mental state will improve, the sleep will be relatively stable, the appetite will be enhanced, the child will become active and like to exercise, and the amount of speech and activity will also gradually increase. During the improvement period of pneumonia, children should drink more water and add more high quality proteins and vitamin-rich foods to strengthen the body and promote the recovery of the body. During this period, if the fever recurs or is accompanied by other discomforts, it is necessary to review the hospital in a timely manner, so as to avoid re-infection and delay the condition.