If early cancer is found under a magnified gastroscope a gastrectomy may be needed. If no cancer is found it does not need to be removed. It depends on the specific examination. Magnified gastroscopy can clearly observe the glandular ducts and capillaries of the digestive tract mucosa, and is usually used to determine whether a lesion is early cancerous. If early cancerous lesions are found under magnified gastroscopy, gastroscopic resection should be performed according to the extent of the lesion, but if there is no cancerous lesion, surgery is not needed. Early cancerous lesions are usually just tiny bulges or depressions, slightly reddish or whitish in color, which are difficult to detect. Magnified gastroscopy can also observe the extent of the cancerous lesion, which facilitates accurate removal of the cancerous tissue. Gastroscopic resection surgery is less invasive, which is conducive to postoperative recovery, and can also shorten hospitalization time and indirectly reduce hospitalization cost. Whether it is necessary to do gastroscopic resection after magnified gastroscopy depends on the condition, and standardized treatment should be carried out under the guidance of doctors to avoid delaying the condition.