The first thing to do is to look for the cause of the fever and cough, you can check the blood routine, blood sedimentation, C-reactive protein and chest X-ray, if it is a viral cause of cough and fever, you can use antiviral drugs for symptomatic treatment. If the cough and fever are caused by bacterial infection, antibiotic drugs can be used for symptomatic treatment, such as penicillin, cephalosporin, macrolides and quinolones, but quinolones are not suitable for adolescents under 18 years old. It can be combined with proprietary Chinese medicines, such as acute syrup, honey-refined Chuanbei loquat paste, strong loquat lozenges, lung force cough compounds and other medicines to clear heat and resolve phlegm. If low-grade fever, cough and other symptoms caused by tuberculosis are considered, examination of sputum culture, finding tubercle bacilli in sputum, chest CT, etc. are recommended. For patients who are clearly diagnosed as tuberculosis, it is recommended to go to regular specialized hospitals for consultation and treatment, and anti-tuberculosis drugs are usually given for symptomatic treatment. If cough and fever symptoms caused by lung cancer are considered, it is recommended to have surgery as early as possible if there are surgical indications, and to have radiotherapy if there are no surgical indications.