Reduced pharyngeal muscle tone can cause trapping of the upper airway during inspiration. It can be seen in respiratory sleep apnea, etc. Normal breathing requires a high degree of coordination of respiratory muscle contractions and a certain basal tone of the upper airway muscles to keep the airway open. Each diaphragm contraction is preceded by a nerve discharge that causes the upper airway muscles to contract. The contraction of the chin-lingual muscle pulls the tongue forward to fix the pharyngeal wall, further keeping the upper airway open and resisting the trapping effect of negative pressure in the pharyngeal cavity on the upper airway during inspiration. What should be noted in the diet of airway trapping? 1, it is advisable to eat food with high protein content. Milk, rich in protein, less fat, and unsaturated fatty acids. Soybean milk, rich in plant protein, is good for promoting tissue repair, while this product is not irritating to the larynx. 2.It is advisable to eat food with soft texture. 3.It is advisable to eat a liquid diet. Thin rice, which has little irritation to the larynx, is not easy to induce laryngeal muscle spasm, and is high in calories, which is conducive to providing sufficient heat to the organism. 4. Spicy and irritating foods should not be used. 5.Allergic foods should be avoided.