If you are afraid of acidity after eating betel nut, you need to stop eating betel nut, and then improve the symptoms through daily care and medication. 1. Stop eating betel nut: the acidity of teeth after eating betel nut is due to the wear and tear of teeth, patients need to stop eating betel nut to avoid aggravation of the condition. 2. Daily care: daily patients need to adjust their dietary habits, quit smoking and drinking, and at the same time, they can use anti-allergic ointment to brush their teeth at home. In addition, you can use mouthwash to rinse your mouth after each meal. 3. Medication: If the acidity of betel nut is more serious, you can choose to use desensitizers to improve the symptoms. After the phenomenon of eating too much betel nut teeth afraid of acid, you should do a good job of daily care, serious cases can be medical treatment, follow the doctor’s instructions to use drugs to improve the symptoms, not to treat, so as not to lead to adverse consequences.