Gastritis causes radiating pain in the back, which may be caused by gastric mucous membrane damage, esophageal mucous membrane damage and so on. 1. Gastric mucous membrane damage: when suffering from gastritis, gastric mucous membrane can be stimulated by gastric juice and other digestive juices, when the gastric mucous membrane is seriously damaged, or even ulcers appear, there can be obvious pain in the stomach, and sometimes the pain can be radiated to the back, and when it is serious, it can also be accompanied by palpitations (heartbeat accelerated, often accompanied by panic), chest tightness and other symptoms. 2. Esophageal mucosal damage: gastritis can lead to long-term gastric reflux, esophageal mucosa in the long-term stimulation of gastric acid, can lead to mucosal damage, epigastric pain, chest pain, belching (hiccups) and other symptoms, and in severe cases, radiating pain in the back. Gastritis causing back radiating pain may also be caused by other reasons, it is recommended that patients go to the hospital in a timely manner to improve the auxiliary examination, a clear diagnosis, and active treatment.