Gastric ulcers in humans most commonly occur in the sinus area or the corners of the stomach, and most are usually characterized by crater-like changes. In general, the central area is often characterized by depression, mostly as a result of erosion or rupture. The surface will be covered with a dirty white moss, and it is possible that this thin white moss may show exposed blood vessels under the mucous membrane. Therefore, in the case of thin white tires, care should be taken not to touch them during gastroscopy, if possible, or bleeding may easily result. For the periphery of the depression may appear elevated hyperplasia, and most of this hyperplasia will show atypical hyperplasia. If there is infiltration into the submucosa and the muscular layer of the mucosa, there is a risk of severe atypical hyperplasia. Histopathologic biopsy can be performed endoscopically, and the location chosen is usually the peripheral mucosal elevation, where the positive results are relatively high. In the peripheral mucosal elevation, most of the mucosal congestion, edema, some may be accompanied by erosions, and the mucosal folds will be concentrated to the central region, generally this concentration is mostly if the middle is broken, may be malignant problems, if the continuous distribution of most of the benign lesions.