The process of betel nut chewing will damage the taste nerve and saliva secretion, and often chew betel nut for the stomach wall stimulation is also very large, resulting in inflammation of the stomach and even gastric perforation, which caused obstruction to the normal work of the digestive system, seriously affecting the body’s food digestion, nutrient absorption. Often chewing betel nut also brings a lot of oral diseases, the more serious is to cause oral mucosal disease, so that the mouth is easy to dry, taste function is reduced, lip and tongue numbness, oral mucosa burning sensation, oral mucosa fibrosis and other discomfort, serious may also cause mouth opening restrictions, swallowing difficulties. Another more serious one is to cause oral cancer.