A clear esophageal dentate line is a normal description and does not suggest the presence of any pathological changes. The esophageal dentate line is an anatomical description of the junction between the stomach and the esophagus. During gastroscopy, the mucosa of the esophagus can be observed to appear light red, while the stomach appears orange, with a dentate demarcation line at the junction of the two, also known as the esophageal dentate line. The dentate line of the esophagus enables a clearer delineation of the anatomy of the esophagus and stomach under gastroscopy, and has diagnostic significance for anatomical abnormalities or pathological changes, such as hiatal hernia and Barrett’s esophagus, where the dentate line is often displaced upward and has some clinical significance.