Betel nut is a traditional Chinese medicine, also known as pandan. It is bitter in taste, pungent and warm in nature, and is classified into the stomach and large intestine meridians. It has the effects of lowering Qi, eliminating food and removing phlegm. It is mainly used to treat food stagnation and diarrhea and dysentery. In the main production areas of betel nut there are people who like to chew betel nut, which can be harmful to the human body, because betel nut itself is a carcinogenic substance. Chewing betel nut while smoking can lead to oral cancer, stomach cancer, throat cancer and many other diseases, and excessive chewing of betel nut can lead to dizziness, nausea and vomiting, breathing difficulties and many other adverse reactions. Betel nut addiction is due to the fact that betel nut contains ingredients that can cause excitement and paralysis of the nerves and other stimulating effects. Long-term use will produce nerve dependence on this stimulation, resulting in the phenomenon of addiction.