Sweet taste may be caused by spleen and stomach dysfunction, diabetes, or excessive intake of sweets. Many people have spleen and stomach disorders, which not only disrupt the digestion of food, but also lead to abnormal secretion of various digestive enzymes. When the secretion of salivary amylase in the mouth increases, the human body will feel the sweetness in the mouth. Diabetes is a very dangerous disease that causes the body’s blood sugar metabolism to become abnormal. Most people with diabetes have a sticky mouth and a sweet taste in their mouth because their blood sugar is higher than normal. Some of the sweetness in the mouth is caused by a large amount of sweet food in the diet, which not only affects the function of the spleen and stomach, but also causes corrosion of the teeth, and after eating sweets do not rinse the mouth in time, there will be sugary food in the mouth, so there will be a sweetness in the mouth.