Adults belching more than can be caused by indigestion, can also be caused by chronic gastritis, and can be caused by reflux esophagitis. 1. Dyspepsia: dyspepsia is a persistent or recurrent episodes of epigastric discomfort. Adult patients with this disease may experience more than belching, and patients may also experience early satiety, anorexia, postprandial fullness, nausea, vomiting and other symptoms. 2. Chronic gastritis: chronic gastritis is a chronic inflammatory disease of the gastric mucosa caused by a variety of factors, the disease can also lead to adult patients with more than belching symptoms, the patient can also appear in the upper abdominal discomfort or pain, acid reflux, nausea and other symptoms. 3. Reflux esophagitis: Reflux esophagitis is a kind of gastroduodenal contents reflux into the esophagus caused by the disease, the disease can lead to adult patients with more than belching symptoms, patients can also appear heartburn, chest pain, dysphagia and other symptoms. In addition to the above diseases, other factors can also cause belching symptoms in adult patients. It is recommended to consult a doctor in time to find out the cause and ask the doctor to deal with it.