The presence of cough with green pus sputum indicates a serious infection of the respiratory system, and it is a bacterial infection, most likely caused by Pseudomonas aeruginosa, which is usually called Pseudomonas aeruginosa. It needs to be treated with antibiotics, the effect of oral antibiotics is not enough, need intravenous drip antibiotics for treatment, clinical if there is no penicillin allergy, you can use penicillin intravenous drip for treatment. If there is an allergy to penicillin, it can be replaced with cefoperazone, and the effect is also good. If there is also allergy to cephalosporins, only erythromycin can be used for anti-inflammatory treatment. It is also necessary to use phlegm-reducing medications to help promote recovery from coughing. It is recommended to use Ambroxol hydrochloride or Ambrotero oral solution, and Chinese medicines such as compound fresh bamboo liquid or lung power cough combination, which are often more effective in resolving pus phlegm. If the cough is severe, you can also inhale terbutaline sulfate by nebulizer to relieve the symptoms.