Bitter mouth and astringent eyes and unformed stools may be caused by elevated blood sugar, digestive diseases and other factors. 1. Elevated blood sugar: due to elevated blood sugar, diabetic patients will experience metabolic dysfunction, loss of body water, and due to long-term use of hypoglycemic drugs, which will cause some damage to the liver, and then there will be a bitter taste in the mouth, astringent eyes, and the symptoms of unformed stools. 2. Digestive tract diseases: such as gastroesophageal reflux disease, gallstones and other diseases, there will be poor digestive function, abdominal pain, abdominal distension, unformed stool, dry mouth and other discomforts. There may also be other causes of bitter mouth and astringent eyes and unformed stools, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment under the guidance of the doctor.