Causes of early morning bitter mouth more reasons, can be analyzed from oral diseases, liver and gallbladder diseases, gastrointestinal diseases and other disease factors, the specific cause of the disease should also go to the hospital in time for examination and confirmation. 1. Oral diseases: If gingivitis, periodontitis, oral ulcers and other symptoms occur in the oral cavity, it will cause oral mucosa congestion, edema, exudation of inflammatory factors, etc., which will lead to the symptom of bitter mouth in the morning. 2. Liver and gallbladder diseases: acute chronic hepatitis, cholecystitis, gallbladder stones and other symptoms, so that the body of the bile reflux, which leads to the symptoms of early morning bitter mouth. 3. Gastrointestinal diseases: If symptoms such as chronic gastritis and esophageal reflux occur, the body’s digestive system becomes abnormal and is unable to break down the food consumed in a timely manner, which can lead to the symptom of waking up with a bitter taste in the morning. If you have symptoms, you should go to the hospital in time, and give targeted treatment after clarifying the cause, so as to avoid aggravation of the condition, which will have an impact on your health.