If a child has had moderate pneumonia and then later gets a cold or fever, it may come back. If a child has had moderate pneumonia and later catches a cold and fever, it may develop into pneumonia and lead to a relapse. In particular, children with poor body resistance are susceptible to external pathogens, such as bacterial infections, viral infections, or inflammation of the lungs caused by atypical pathogens, which may lead to recurrent episodes of pneumonia after a cold and fever. If children have moderate pneumonia and then have a cold and fever, it is recommended that they go to the respiratory medicine department of a regular hospital as soon as possible for consultation and treatment, so as to actively control their condition and avoid the recurrence of pneumonia. Usually, we should pay attention to the children’s diet and nutrition, eat more fresh vegetables, fruits, etc. Appropriate physical exercise for children to enhance physical fitness, improve body resistance, can better resist the invasion of various pathogens.