Drinking water feels bitter need to consider physiological causes and pathological causes. Physiological causes include irregular diet, eating too much greasy food, etc. Pathological causes include reflux esophagitis, bile reflux gastritis, cholecystitis and hepatitis. 1. Physiological causes: irregular diet, eating too much greasy food, etc. can lead to excessive secretion of bile and reduced digestive ability, which will lead to symptoms such as bitter taste in the mouth and abdominal distension. 2. Pathological causes: such as reflux esophagitis can also have acid reflux, burning sensation behind the sternum and other symptoms; such as bile reflux gastritis can also have abdominal pain, abdominal distension and other symptoms; such as cholecystitis can also have loss of appetite, pain in the right back and other symptoms; such as hepatitis can also have loss of appetite, jaundice and other symptoms. For the case of drinking water feels bitter, it is recommended to consult a doctor to clarify the specific causes.