There are many reasons why gastroscopy shows yellow spots, if it is caused by gastritis in the stomach, it can be treated by using medicines such as omeprazole; if it is caused by tumors in the stomach, it needs to be treated by surgery, and it needs to be analyzed on a case-by-case basis. 1. Gastritis: gastroscopy shows yellow spot, which may suggest gastritis, usually caused by irregular diet or unhygienic, usually acid reflux, heartburn and other symptoms, which can be treated with drugs such as omeprazole and bismuth potassium citrate. 2. Tumor: Gastroscopy shows that yellow spot may suggest that the patient has gastric xanthoma, which usually has no obvious symptoms and is usually found during gastroscopy, and needs timely endoscopic resection. Patients in daily life should also pay more attention to dietary regimen, eat less stimulating food to the gastric mucosa, eat more fresh fruits and vegetables. The above drugs should be used under the guidance of professional physicians. The above situation needs to go to the hospital in time, under the guidance of professional physicians as soon as possible to avoid delaying the condition.