Belching is the spillage of gas from the gastrointestinal tract up to the throat and out of the mouth, sometimes accompanied by symptoms of gastric distention. It often occurs or worsens after eating and is usually due to indigestion, gastrointestinal dysfunction or dysbiosis. Urgency is caused by rapid and forceful contraction of the diaphragm and upper abdominal wall muscles, resulting in a short, loud sound from the cardia, esophagus or throat, and may be accompanied by a small amount of gas spillage. It is usually caused by local nerve dysfunction and muscle spasm induced by cold, tension and irritation, and also by central nervous system diseases, tumors and other etiologies. Gas-swallowing disorder is mostly due to the role of unbalanced or one-sided information cues, fast-paced life, increased psychological stress, tension, apprehension, eating too fast, diet accompanied by air swallowing or involuntary swallowing of air at leisure and subsequent expulsion. Imbalance of physical fitness, disorders of labor and rest, emotional and mental disorders, and improper eating and living with hot and cold can also cause overlapping or alternating episodes of gas swallowing with belching and eructation due to indigestion and diaphragm dysfunction.