When a severe lung infection occurs, if effective anti-infection treatment can be carried out, as long as the medication is effective it is possible to survive without affecting life. At this time, it is best to do sputum culture and drug sensitivity test to see which type of infection, according to the type of infection to choose the appropriate antibiotics for treatment. It is also necessary to use hormones, which are needed for systemic medication to reduce the inflammatory response and attenuate the extent of the lung infection. Combined with nebulized inhalation therapy, which can effectively reduce the extent of lung infection, both budesonide and terbutaline sulfate can be nebulized and inhaled. Antibiotics need to be selected according to the results of drug sensitivity tests, if the lungs are heavily infected, the drug treatment is ineffective or the general condition is poor, the time that can be lived is very short some may not exceed 3 days, and some people may last 10-15 days.