1. Bronchopneumonia:Clinically this is the most common in winter. It manifests as fever, cough, sputum, wheezing, bruising, and wet rales on auscultation of the lungs. A chest radiograph shows a large amount of inflammatory exudate. Laboratory tests show increased white blood cells and increased CRP. 2, wheezing pneumonia: Most commonly seen in infants within one year of age, especially those within 6 months of age. The clinical progress is rapid, from the discovery of the “cold” to the development of pneumonia, generally no more than 3 days, after the discovery of pneumonia, there is a period of progression, the peak period lasts about 3-4 days. The main clinical manifestations are wheezing and dyspnea (stridor). The disease is more severe because the child is small, coughs weakly and does not spit. Early on there will be symptoms suggestive of the onset of pneumonia such as spitting up, choking, perioral bruising, increased respiratory rhythm, nodding breathing, inspiratory trismus, etc., and twisted sounds in the lungs on auscultation. Severe cases also have also clinical hints, such as high fever, irritability, repeated choking and bruising, increased heart rate, etc. 3. Lobar pneumonia: Most often seen in slightly older children. There are several symptoms to be alerted to the disease: high fever that does not subside, cough that is severe, prolonged course of the disease, bilateral respiratory sounds on auscultation of the lungs that do not match, and solid changes on percussion. If there is a large piece of high-density shadow, the diagnosis is confirmed, there is an epidemic in Yuncheng in recent years, mostly mycoplasma infection, some are bacterial infections, can be accompanied by abscess chest. Hospitalization is required. 4, neonatal pneumonia: newborns are a special group, young, poor resistance, easy to cross-infection, clinical symptoms after the disease is insidious, the progress of the disease is not easily detected, so often delayed because of late diagnosis. This is especially true for premature infants. It is important to emphasize that the newborn period to reduce visits, or a little more sophisticated read, visit the pregnant mother does not visit the newborn. In recent years, there have been many cases of pneumonia and death due to a large number of visitors after 5-10-15-20 days after the birth of the full moon. In addition, with the increase in the number of second children, older children respiratory infections, will cross-infect the newborn.