Double pneumonia is essentially pneumonia, and the specific treatment is as follows: 1. The treatment should be directed at the pathogen. The key to pneumonia caused by bacterial infection is anti-infective treatment, including empirical treatment and treatment directed at the pathogen. Viral infection pneumonia progresses faster and may not be completely distinguishable from bacterial pneumonia at the beginning, which is not easy to assess clinically. Prompt hospitalization is recommended when clinical symptoms are significantly aggravated; 2. Symptomatic supportive treatment is needed. When cough symptoms are manifested as dry cough, cough suppressants can be used as appropriate. In case of excessive sputum or the presence of pus sputum, expectorant drugs can be considered to expectorate and promote sputum expulsion, including aminoglutethimide, acetylcysteine, myrtle oil, etc. Postural drainage, turning and back patting can also be used to promote sputum expulsion. Patients with fever can use physical cooling as well as antipyretic and antipyretic drugs to bring the body temperature down to normal, but care should be taken to avoid overdose. Patients with hypoxic manifestations may be treated with oxygen therapy, along with hydration and respiratory humidification and nutritional support.