If phlegm and bad breath are mostly caused by damp heat in the lung and stomach, you can take oral Chinese herbal tonics to regulate the condition. You can use Qing Gastric San and Guo Chi San plus reduction, which have the effect of clearing heat and relieving dampness, and after the symptoms are reduced, you can take oral Chinese medicine Huo Xiang Zheng Qi Soft Capsules and Huang Lian Shang Qing Wan; you can also take Huo Xiang Qing Stomach Tablets, which have the effect of clearing heat and resolving dampness. If the sputum is sticky and not easy to cough up, you can take oral aminoglutethimide, which can dilute the sputum and promote the discharge of sputum. You can also check blood routine, blood sedimentation, C-reactive protein and chest X-ray, and through blood and image analysis, if the sputum is caused by viral, you can use antiviral drugs for symptomatic treatment, such as ribavirin. If the sputum is caused by bacterial infection, antibiotic drugs can be used to control the infection, such as penicillins, cephalosporins and macrolides. It can be treated by a combination of Chinese and Western medicine, which can shorten the cycle and improve efficiency.