Indigestion can cause bloating and early satiety, abdominal pain, acid reflux and heartburn, nausea and vomiting. 1. Bloating and early satiety: When patients suffer from indigestion, the food in the stomach is slow to empty downward, and it will be stored in the stomach, producing a large amount of gas when digesting, which makes patients suffer from bloating and early satiety. 2. Abdominal pain: when indigestion occurs, it may be accompanied by gastrointestinal mucous membrane damage, when gastric acid stimulates the gastrointestinal mucous membrane, abdominal pain will occur. 3. Acid reflux and heartburn: when indigestion occurs, it can not be emptied downward in time, so that the stomach acid will be regurgitated upward and refluxed upward along the esophagus, which burns the esophagus and makes the patient suffer from the symptoms of acid reflux and heartburn. 4. Nausea and vomiting: indigestion makes the gastrointestinal emptying ability is not good, the gastrointestinal food abnormal fermentation, the formation of a large amount of gas, push the gastrointestinal food upward surge, resulting in nausea and vomiting symptoms occur. When patients have indigestion, it is best to go to the hospital in time to receive treatment in order to alleviate the discomfort.