Brushing teeth and vomiting food usually has no effect on the body, brushing teeth and vomiting food may be due to the patient’s toothpaste squeeze too much, physiological phenomenon and other reasons. 1. Too much toothpaste: Vomiting food from brushing teeth may be caused by patients who have squeezed too much toothpaste, which will produce a lot of foam during brushing, which will irritate the throat and lead to vomiting. 2. Physiological phenomenon: When the position or size of the brush head is incorrect, it will produce certain stimulation to the pharynx, which will lead to vomiting. If the patient is in pregnancy, there will also be obvious vomiting during brushing. Sudden brushing with cold water may cause discomfort in the pharynx, which can lead to vomiting. Vomiting of food from brushing teeth may also be associated with throat disorders, for example. It is recommended that patients who experience vomiting after brushing their teeth should promptly rule out physiologic factors and take targeted treatment measures, while at the same time eating a light diet and abstaining from smoking and alcohol. If the situation is serious, it is recommended to seek medical attention.