People often eat high-temperature food, which is generally not healthy and will cause mucosal damage in the digestive tract. Long-term consumption of food with high temperature will cause mucosal damage of digestive system, cause ulcer, erosion, congestion and exudation, and even induce precancerous lesions of patients. This situation is more serious, and it is not recommended to eat food with high temperature often. In addition, eating foods with too high a temperature will often lead to dysfunction of autonomic nerves in the gastrointestinal tract, which will be affected by temperature, touch and smell, and will also stimulate the nervous function of the digestive tract.

The mucosa of the digestive system is relatively weak, mainly composed of oral mucosa, esophageal endothelial cells, gastric endothelial cells and epithelial cells, and intestinal epidermal cells. This kind of mucosa, epidermis and epithelial cells are relatively weak and are easily stimulated by acid, spicy, too high or too low temperature. So eating too much hot food, cold food, acidic food and spicy food will cause stomach pain and oral discomfort.