The first reason is that the salivary gland secretion function decreases and the amount of saliva secretion decreases, resulting in a dry and sticky mouth. Secondly, stomach fire is too big to cause a sticky mouth, mostly due to long-term consumption of spicy, fried food, love to eat late night snacks, causing indigestion, accumulation of food makes the stomach fire rise to cause a sticky mouth. Then there are oral mucous membrane diseases, such as oral ulcers, gingivitis, chronic tongue inflammation, etc., because of oral inflammatory factor exudation and changes in mucosal texture, which can also cause the phenomenon of a sticky mouth. Patients with sticky mouth should drink more water, maintain a light diet, eat more fresh fruits and vegetables, and take appropriate medications such as clear fire gardenia wheat tablets, niuhuang Shangqing pill, and stomach-healthy tablets for sticky mouth caused by fire.