People with frequent stomach acidity do not necessarily have stomach cancer because many benign stomach diseases, such as inflammation of the stomach and duodenum and ulcers of the stomach and duodenum, may often have acid reflux and other conditions. However, some patients with gastric cancer actually do not have obvious acid reflux, but often experience abdominal distension, aversion to grease, emaciation, weakness, and even vomiting blood or blood in stool. Therefore, for people with frequent acid reflux, they should have gastroscopy in time. Through gastroscopy, the whole stomach can be examined, including tiny lesions as well as tiny cancer, which may be detected early under gastroscopy. If benign patients frequently produce acid reflux, they should also be given certain medications, including drugs that inhibit acid secretion in the stomach, such as omeprazole or pantoprazole, which can help treat the condition.