Biopsy is usually not needed if it is simple non-atrophic gastritis, and biopsy is usually needed for non-atrophic gastritis with erosion. Non-atrophic gastritis does not always require a biopsy, if it is simple non-atrophic gastritis, usually can not need a biopsy. However, if non-atrophic gastritis is combined with celiac disease and ulcers, then biopsy is recommended to assist in diagnosis and later treatment. During gastroscopy, if you see the erosion surface of the stomach, it means that the gastric mucosal damage is more serious, and it is necessary to clarify the degree of erosion through gastroscopy biopsy and rule out the occurrence of precancerous lesions. Therefore, non-atrophic gastritis with erosion requires biopsy for a more comprehensive evaluation of the condition, and further guided treatment to improve the prognosis after the pathology of the biopsy is revealed.