Sweet mouth when waking up is mostly seen in diabetes and digestive system diseases, Chinese medicine believes that sweet mouth is mostly related to dietary factors, as follows: 1, Patients suffering from acute and chronic gastritis, gastric ulcer, duodenal ulcer and other digestive diseases, gastrointestinal dysfunction has led to abnormal secretion of various digestive enzymes, and the amylase content in saliva is elevated to produce a sweet taste in the mouth; 3, Chinese medicine believes that the cause of sweet mouth is damp heat in the spleen and stomach, mostly because of improper diet, eating too much greasy or spicy, stimulating food, usually accompanied by abdominal fullness, limb sleepiness, limb weakness, sticky and unpleasant stools, and The symptoms of yellow tongue coating.