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. Common symptoms of pneumonia include: 1. General symptoms include fever, loss of appetite, depression or irritability; refusal to eat, choking, vomiting and breathing difficulties are common in small infants. Respiratory symptoms include frequent irritating dry coughs, followed by phlegm sounds in the throat and vomiting and choking when the cough is severe. 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 and treat it actively.