Every person has a pharyngeal reflex that produces nausea and dry heaving in the pharynx when an object irritates the pharynx. The reaction is usually mild, but when the patient has a history of chronic pharyngitis and chronic pharyngolaryngitis disease, the symptoms of nausea and dry heaving will be obvious. Especially when brushing teeth, the stimulation of the throat by the toothbrush and the stimulation of the throat by the toothpaste foam will aggravate the inflammatory reflexes in the pharynx and cause nausea, dry heaving and other uncomfortable symptoms. For this situation, we should pay attention to brushing teeth gently, avoid vigorously brushing teeth to stimulate the throat. Usually do not smoke, drink alcohol, reduce the stimulation of the throat. Usually can contain watermelon cream, golden throat throat treasure, grass coral tablets and other tablets to protect the throat, so that the pharyngeal reflex symptoms to reduce, and try not to shout in life.