Patients are advised to go for gastroscopy, but patients often ask what items are included in gastroscopy. Gastroscopy mainly refers to electronic gastroscopy, which can clearly observe the situation in the bulb and descending part of the stomach and duodenum, and it should also be noted that the gastroscopic biopsy tissue is noted to observe the pathological nature. If the patient has abdominal distension, nausea, acid reflux and other discomfort, consider the possibility of esophagitis, like this case must be recommended to the patient to further check the electronic gastroscopy examination. Therefore gastroscopy consists most of endoscopic observation of the lesions of the stomach and duodenum, as well as taking pathological tissues if necessary, and there can be a rapid urease assay in order to clarify the presence of H. pylori infection.