Gastritis back pain may be related to gastric mucous membrane damage, gastric ulcer, gastric tumor and soft tissue muscle injury in the back. 1. Serious damage to the gastric mucosa: when gastritis causes serious damage to the gastric mucosa, there will be obvious pain, and there may be pain involving the back, chest, left shoulder and other parts of the back, this pain is often involved, mainly in the stomach pain. 2. Gastric ulcer: patients with gastritis and gastric ulcer have acid reflux and heartburn for a long time, which may be complicated with palpitation, which will lead to pain in the back, and at the same time may be accompanied by symptoms such as rapid heartbeat, chest tightness, and respiratory obstruction. 3. Stomach tumor: if gastritis patients have stomach tumor, the location of the tumor is close to the back, when the tumor site is stimulated or pulled, there will be pain in the back, and usually there are symptoms such as loss of appetite, emaciation and so on. 4. Soft tissue and muscle injury in the back: If gastritis patients have recent trauma, they should consider soft tissue injury, which leads to pain caused by muscle and muscle fiber damage. If the symptoms of gastritis back pain, you need to go to the hospital in time, under the guidance of the doctor’s treatment.