There is sputum that cannot be spit out, and it needs to be treated according to different reasons, as follows: 1. Sputum: If the sputum is more viscous and cannot be easily coughed out, consider using drugs that promote sputum discharge for treatment, such as clinically common carboxymesterol and eucalyptus pinene capsules to promote sputum discharge; 2. No sputum: It is more common in the throat, manifesting as foreign body sensation in the throat, mostly due to chronic inflammation. Clinically, it is common due to repeated history of infection, bad hobby stimulation, allergic factors or reflux, etc. It needs specific analysis and targeted medication according to the specific situation. If it is caused by allergic factors, antihistamine and anti-allergy drugs can be used for treatment. If it is caused by recurrent infection, it is necessary to clarify whether the infection is in the nasal cavity, throat or trachea. It may be caused by increased secretion due to mucosal inflammation or chronic inflammation due to gastric acid reflux and pepsin erosion and irritation of the mucosa of the throat. In this case, it is necessary to use drugs that inhibit gastric acid and gastric power to relieve gastric acid reflux and reduce the corrosion of the pharyngeal mucosa by pepsin and gastric acid, which can achieve a complete cure.