Eat anything bitter, because the mouth is bitter, common causes of oral cleaning problems, liver and gallbladder disease. 1. Oral cleaning problems: long time not seriously brush the teeth and rinse the mouth, cleaning hygiene is not in place, so that the oral cavity teeth itself and the teeth between the accumulation of food debris and soft dirt, for a long time will lead to bacterial proliferation, breeding and corruption of bitter mouth. In addition, if there are dental, periodontal and mucosal diseases such as pulpitis, periodontitis or mucosal ulceration, will also lead to an increase in the number of bacteria, the number of inflammatory factors will also induce bitter mouth. 2. Digestive system diseases: such as gallstones, cholecystitis, cholestasis, bile reflux and other diseases, you are prone to bitter mouth. Functional dyspepsia caused by eating too much can also trigger bitter mouth. Symptoms of bitter mouth, but also timely consultation, under the guidance of the doctor to clarify the cause of the disease, timely treatment.