The causes of dry throat, bitter mouth and dry eyes are organic and non-organic causes. 1. Non-organic causes: when a long time without brushing teeth, stay up late, eat a lot of indigestible food before going to bed, such as coffee, strong tea, alcohol, etc., a large amount of food residue in the mouth, so there will be a dry throat and bitter mouth symptoms, a long time to stay up all night eye fatigue, resulting in eye dryness, so the above mentioned bad habits caused by autonomic nervous system disorders can cause a dry throat, a bitter mouth, dry eyes. 2. Organic causes: when the patient suffers from gallbladder diseases such as cholecystitis, gallstones, etc., these diseases lead to bile discharge abnormalities, can not normally enter the duodenum, the bile will enter the bloodstream, resulting in the patient’s symptoms of dry throat, bitter taste in the mouth, and may lead to yellowing of the eyes to appear jaundice, there may be symptoms of dry eyes. Patients with gastrointestinal disorders such as gastritis, gastric ulcer or enteritis may also have dry throat, bitter mouth and dry eyes. Dry syndrome also manifests as dry throat and dry eyes. Patients with dry throat, bitter mouth and dry eyes should go to the hospital for further examination and treatment under the guidance of specialized doctors when non-organic causes are ruled out.