Cracked tongue caused by eating betel nut may be related to eating too much betel nut, scraping the tongue with betel nut and disease caused by betel nut, etc. It is recommended to stop eating betel nut and utilize medication to repair and treat the disease. 1. Eating too much betel nut: eating betel nut causes cracks on the tongue, which may be caused by eating too much betel nut, the first thing to do is to stop eating betel nut, drink a lot of water, and pay attention to three meals a day to eat a balanced diet. 2. Betel nut scrapes the tongue: In the process of eating betel nut, the betel nut accidentally scrapes the tongue and causes cracks. Usually pay attention to oral hygiene, appropriate use of rehabilitation of new liquid gargle, promote mucosal repair. 3. Betel nut causes disease: betel nut is carcinogenic, eating betel nut causes tongue cracks may be the body suffers from oral cancer and other diseases show symptoms, such as diagnosed oral cancer need to carry out radiotherapy, immunotherapy and targeted therapy, surgery and other comprehensive treatment programs. If you find that eating betel nut causes tongue cracks, you can go to a regular hospital to find out the cause of the disease and get the right treatment.