Pathology after gastroscopy is done in order to observe the morphology of tissues and cells under the microscope to determine the nature of the lesion. Pathology is usually required after gastroscopy. When doing gastroscopy, the doctor will usually clamp a small piece of diseased tissue on the gastric mucosa through the gastroscope, and the pathological examination after gastroscopy is to observe this piece of diseased tissue under the microscope to determine the nature of the lesion. Gastric ulcer lesions and gastric cancer lesions are often very similar in gastroscopy, with congestion and erosion of the mucosa, brittle texture, easy to bleed when touched, etc. Therefore, observation through gastroscopy can only provide an approximate direction, and it is not possible to determine which lesion belongs to which kind of lesion. The nature of the lesion can only be determined after gastroscopy and then pathologic examination. In addition, the presence of Helicobacter pylori infection, atrophic gastritis, etc. can be diagnosed by pathologic examination. If pathologic examination is needed after gastroscopy, please follow the doctor’s instructions to complete the relevant examinations.