If children often eat bubble gum may cause dental caries, indigestion, trachea foreign body and bite muscle hypertrophy and other hazards. 1. Dental caries: bubble gum contains sugar, chewing bubble gum for a long time can easily lead to oral acid, corrosion of teeth, leading to decalcification of teeth, resulting in dental caries and other oral problems. 2. Indigestion: the main component of bubble gum is polyvinyl acetate resin, which is difficult to digest if swallowed into the intestines, leading to indigestion in children. 3. Tracheal foreign body: children, especially young children under two years old, using bubble gum can easily lead to its entry into the trachea, forming a tracheal foreign body, which is very dangerous. 4. Bite muscle hypertrophy: chewing bubble gum for a long time can easily lead to over-hypertrophy of the bite muscle on both sides, affecting the face. So it is not recommended that children use bubble gum. Children chewing bubble gum if there is discomfort, please consult a doctor in time.