The appearance of a green nasal discharge from a cold indicates the occurrence of a cold caused by Pseudomonas aeruginosa. At this time, if there is no cough, coughing phlegm phenomenon, fever is not very serious, you can take oral antibiotics for treatment, using antiviral drugs or common cold medicine, the effect is not particularly good. At this time, you can take oral amoxicillin, or cephalosporin antibiotics, such as the use of cefixime, or cefradine. If the symptoms are more serious and cause coughing, coughing and even high fever, intravenous antibiotics are needed for treatment. At this time, piperacillin, meloxicillin, and ticarcillin can be administered intravenously. You can also use cephalosporin antibiotics, such as cefminox, cefoperazone and ceftazidime intravenously, which are effective. In the case of adults, intravenous drip treatment with amineptine and treatment with imipenem can also be used, all with good results.