The most common manifestation of esophagitis is pain in the back of the chest, which is related to eating, and may be accompanied by a feeling of feeding obstruction, dysphagia, acid reflux and heartburn, so gastroscopy is recommended at this time to clarify the cause. Of course, in addition to esophageal diseases, stomach and duodenal diseases may also be associated with pain in the back after eating. The most common is biliary system disease, whether the patient has gallbladder infection, gallstones, or even some patients may have problems with the thoracic and cervical spine, which can also affect back pain. Therefore, the back pain after eating and swallowing is firstly considered as pain of esophageal origin. After excluding these problems, the next consideration is whether there are diseases of the biliary system, stomach, duodenum, and heart system problems.