Patients with phlegm in the nasopharynx mainly consider the following reasons: First, frequent heavy smoking and alcohol consumption have a strong stimulating effect on the nasal mucosa, so there is often inflammatory exudation in the nasopharynx leading to the formation of phlegm. Second, there may be pharyngitis, sometimes involving the mucous membrane of the nasopharynx is congested and inflamed, there will also be phlegm formation. Thirdly, due to rhinitis, such as hypertrophic rhinitis, allergic rhinitis or sinusitis, nasal mucus often flows backwards, and when it flows to the mucous membrane of nasopharynx, it will stimulate the inflammation of the mucous membrane of nasopharynx, resulting in the formation of phlegm. Regardless of which of the above causes, the treatment requires active anti-inflammatory, anti-swelling, and pro-discharge, which are commonly used clinically, such as cefprozil capsule and eucalyptus lemongrass enteric soft capsule, and the condition will be significantly improved after active treatment.