Gastric diseases that cause chest tightness are considered to be chronic gastritis, peptic ulcer, gastroesophageal reflux and other diseases. 1. Chronic gastritis: refers to the chronic inflammation of the gastric mucosa caused by Helicobacter pylori, autoimmune, aspirin and other non-steroidal drugs and other factors, can be divided into chronic atrophic gastritis, chronic non-atrophic gastritis, special types of gastritis and so on. It can be manifested as vague pain in the epigastrium, loss of appetite, postprandial fullness and other dyspeptic symptoms, and some patients may have chest tightness, anemia and other symptoms. 2. Peptic ulcer: refers to ulcers caused by gastrointestinal mucosa being digested by gastric acid, pepsin and other self-digestive enzymes, with gastric ulcers and duodenal ulcers being the most common. Typical symptoms are periodic and rhythmic pain and acid reflux in the upper and middle abdomen, accompanied by anorexia, nausea, abdominal distension, chest tightness and other symptoms. 3. Gastroesophageal reflux disease (GERD): refers to the reflux of gastric contents into the esophagus, which causes discomfort and/or complications. In some patients, the refluxed material can reach the pharynx and the oral cavity, causing extra-esophageal symptoms. It manifests as acid reflux and heartburn, accompanied by chest pain, chest tightness, and a burning sensation in the upper abdomen. There are many other stomach diseases that cause chest tightness, such as stomach cancer. It is recommended to consult a doctor in time for a clear diagnosis and targeted treatment.