A toothbrush appears nausea, vomiting, regurgitation, may be due to toothbrush deep too deep stimulation of the pharynx or chronic pharyngitis, gastroesophageal reflux and other diseases, this should be treated after the completion of the relevant examination. 1, toothbrush deep too deep: brush head into the oral cavity when brushing teeth is too deep, toothpaste foam on the brush head and the front edge of the brush head near the mucous membrane of the pharyngeal cavity on both sides, there will be a physiological reflex, resulting in nausea, vomiting, regurgitation. Vomiting and regurgitation. It is recommended that in the process of brushing, gentle movements, do not enter too deep, try to brush in the mouth, gums and teeth, so as to reduce the occurrence of nausea, vomiting, regurgitation phenomenon; 2, chronic pharyngitis: chronic pharyngitis is caused by chronic inflammation of the pharyngeal mucosa, submucosa and lymphatic tissue, when brushing, toothpaste and toothbrush will stimulate the pharyngeal mucosa, resulting in pharyngitis attack, will cause nausea, vomiting The symptoms of nausea, vomiting and regurgitation. At this time, through the use of gargle or other drugs to treat chronic pharyngitis, while taking the correct and effective way to brush teeth, can reduce pharyngeal discomfort, thereby alleviating nausea, vomiting, regurgitation; 3, gastroesophageal reflux disease: gastroesophageal reflux disease is a disease caused by the reflux of gastric contents into the esophagus, can stimulate the throat to cause foreign body sensation, thus causing nausea, vomiting, regurgitation performance. At this time, attention should be paid to improving daily living and eating habits, such as quitting smoking and alcohol, elevating the head of the bed when resting, avoiding eating before going to bed, reducing the consumption of foods that may induce reflux symptoms, such as coffee and chocolate, as well as avoiding greasy, acidic or spicy stimulating foods, which can make nausea, vomiting, regurgitation and other uncomfortable symptoms ease. Secondly, drugs such as omeprazole and rabeprazole can be applied under the guidance of a doctor to inhibit gastric acid secretion, while aluminum thioglycollate and magnesium aluminum carbonate can be applied to protect the gastric mucosa to reduce discomfort.