There should be no age limit for gastroscopy, as long as gastrointestinal diseases are considered and need to be clearly diagnosed, which can include children and the elderly. If it is for disease prevention and early cancer screening, it is recommended that anyone older than 45 years old who has not had a gastroscopy should have a gastroscopy. For people with a family history of gastrointestinal cancer, it can be advanced to age 40 and they should have a gastroscopy at least once every 5 years afterwards. Gastroscopy is the most accurate way to diagnose gastrointestinal diseases, and some diseases can also be treated endoscopically. Meanwhile, with the development of science and technology, especially the development of painless endoscopy, gastroscopy can be done in a comfortable manner.