Pediatric pneumonia is a common disease in children, especially in infancy, and is a common cause of death in infants and young children in the winter and spring in the northern regions of China. Pneumonia can be caused by bacterial infections (commonly Streptococcus pneumoniae, Haemophilus influenzae, Staphylococcus, Pseudomonas aeruginosa); viral infections (commonly adenovirus, influenza virus, respiratory syncytial virus, measles virus); Mycoplasma pneumoniae infections; and fungal infections. The common symptoms of pneumonia include: ① General symptoms include fever, loss of appetite, depression or irritability; refusal to eat, choking, vomiting and difficulty in breathing are common in small infants. ②Respiratory symptoms are frequent irritating dry cough at the beginning, followed by phlegm sound in the throat, and vomiting and milk choking when the cough is intense. When the cough is severe, it may be accompanied by vomiting and choking. When the symptoms worsen, the respiratory surface becomes faster, the nose flaps, and some children may have mild cyanosis around the mouth and nails. The doctor may hear small to medium-sized blistering sounds in the lungs on auscultation; if no blistering sounds are heard, the doctor may order a chest x-ray to diagnose pneumonia. Severe pneumonia can be combined with other systemic organ symptoms, such as enlarged liver, pale face, edema of the extremities, decreased urine output, etc. Heart failure can occur; lethargy, staring, and convulsions can occur with toxic encephalopathy. It is important to pay high attention to pediatric pneumonia, each child’s performance may have some specificity, not all of them are according to the conventional performance, some pneumonia without fever, and even some pneumonia without cough, must pay attention to the child’s abnormal condition when seeking professional medical consultation and active treatment.