Eating does not usually lead to sputum production, may be related to pharyngitis, lung infection, chronic lung disease and other reasons, respectively, the use of compound boric acid solution, penicillin, ambroxol for treatment. 1. Pharyngitis is the most common disease that can lead to a feeling of foreign body between the throat, inflammation can lead to phlegm production, generally use compound boric acid solution gargle for local treatment. 2. Lung infections, affected by viral or bacterial infections, can cause increased sputum secretion, and similar performance, you can use penicillin and other broad-spectrum antibiotics for anti-infection treatment. 3. Chronic lung diseases, such as chronic bronchitis, bronchiectasis, chronic obstructive pulmonary disease (COPD), etc., can cause increased sputum secretion, which may be mistaken for eating after meals. The specific cause of the disease needs to be clarified after medical examination, and treatment should be carried out according to medical advice.