Moderate consumption of bubble gum does not produce harm, if long-term overconsumption may cause facial muscle hypertrophy, excessive secretion of digestive juices, damage to teeth and other hazards. 1. Facial muscle hypertrophy: the main ingredient of bubble gum is gelatinous base, chewing will involve the biting muscle, temporal muscle, pterygoid muscle, etc., often chewing bubble gum will make the facial muscles overactive, resulting in muscle hypertrophy, serious cases will appear four-sided face. 2. Excessive secretion of digestive juices: regular chewing of bubble gum will stimulate the salivary glands to secrete saliva, may also stimulate the stomach to secrete gastric juices, resulting in excessive secretion of gastric acid, etc. For patients suffering from gastric disorders, acid reflux, nausea, stomach pain and other gastrointestinal discomfort. 3. Harm teeth: bubble gum contains a large number of artificial sweeteners and sugar, chewing bubble gum for a long time will lead to sugar substances stay in the mouth, the oral bacteria decomposition into acid, corrosion of the surface of the teeth, induced dental caries and so on. For the younger and swallowing function is not perfect children, should try to avoid eating bubble gum, to avoid choking and other accidents.