Pulmonary infection is an inflammatory disease of the lung caused by different pathogens, and is a complication of a variety of lung diseases, its pathogens include bacteria, viruses, etc. Treatment drugs can be selected according to the specific cause of treatment drugs, such as infection can be divided into bacterial and viral infections, for different situations to choose antibacterial drugs, antiviral drugs to control the infection, and with the use of drugs with antipyretic, cough, phlegm, asthma and other effects to relieve symptoms. 1, antibacterial drugs: commonly used antibacterial drugs include penicillin, pioneer amycin, quinolones, macrolides, etc. If the patient’s symptoms are more serious and the physical foundation is poor, strong broad-spectrum antibiotics can be used, such as second-generation cephalosporin, azithromycin, etc.; 2, antiviral drugs: commonly used are ribavirin, acyclovir, etc., which can reduce viral replication; 3, antipyretic and analgesic drugs: commonly used are acetaminophen, ibuprofen and other drugs, which can reduce fever and relieve the patient’s infection-induced headache and fever; 4, cough and phlegm drugs Patients with lung infection often have cough and sputum, so drugs such as aminoglutethimide and acetylcysteine are often used to stop coughing and dissolve sputum, which can relieve the patient’s symptoms of coughing up sputum.