Belching, nausea, vomiting. What's going on?

Belching, belching, nausea, vomiting may be related to excessive intake of gas, gastritis, intestinal obstruction and other factors. 1. Excessive intake of gas such as eating too fast or eating foods that are easy to produce gas, such as beans, potatoes, onions, etc., may lead to excessive gas in the gastrointestinal tract, resulting in the above symptoms. 2. Gastritis is acute and chronic inflammation that occurs in the gastric mucosa, which can increase acid secretion or affect food digestion, thus causing related discomfort. 3. Intestinal obstruction may cause intestinal contents to fail to pass through the intestinal tract normally, thus causing gastrointestinal pressure to increase, resulting in the above discomfort symptoms.