Stomach contraction and tightness is usually considered to be caused by stomach spasm, gastrointestinal dysfunction, gastric ulcer and other diseases. 1. Gastroparesis: When the stomach moves frequently, the normal rhythm of peristalsis will be broken and gastroparesis will occur, which is usually manifested as a feeling of tightness in the stomach. 2. Gastrointestinal dysfunction: when the gastrointestinal dysfunction will cause the peristaltic function of the stomach is not good, the gastric power is not enough, resulting in the symptoms of the stomach contraction and tightness. 3. Gastric ulcers: When patients have gastric ulcers, eating spicy and stimulating food will stimulate the ulcer surface of the mucosa of the stomach, resulting in tightness of the stomach, usually accompanied by stomach pain. There may be other pathological factors that cause stomach contraction and tightness, so it is recommended to go to the hospital for examination and take corresponding measures under the guidance of the doctor.