The cause of bitter mouth, acid reflux, heartburn, right rib pain, back pain may be cholecystitis, gastroesophageal reflux disease, acute pancreatitis and other diseases, need to clarify the cause of the cause of treatment. 1. cholecystitis: cholecystitis patients due to bile discharge is not smooth, will flow back into the stomach, and thus manifested as a bitter taste in the mouth, gallbladder inflammation is more serious, will be radiated to the right side of the rib arch or the back and manifested as the right under the ribs and back pain. 2. Gastroesophageal Reflux Disease (GERD): It is due to the reflux of stomach contents, especially stomach acid, into the esophagus, which manifests as bitter mouth and acid reflux, and the stimulation of the esophageal mucosa by the stomach acid causes radiating pain in the ribcage area and the back. 3. Pancreatitis: Patients with acute pancreatitis may experience abdominal pain accompanied by radiating pain in the back, which is usually caused by gallstones, alcohol and hyperlipidemia, etc. The abdominal pain is usually located in the middle and upper abdomen, but it may be heavier on the right side or the left side of the abdomen due to the difference in the location of the inflammation. Due to the diversity of causes, it is recommended to go to the hospital in time to receive relevant examinations after the occurrence of the above symptoms, and actively cooperate with the doctor to receive standardized treatment after the cause is identified as soon as possible.