Gastroscopy can be done while taking aluminum thiosulfate, only need to keep an empty stomach on the day of the examination to go to the examination. Aluminum thioglycollate belongs to the gastric mucous membrane protection agent, mainly used in the treatment of gastroduodenal ulcer, in taking the drug during the gastroscopy will not have an impact on the examination, only need to comply with the requirements of the gastroscopy, fasting on the day of the examination, to avoid the impact of food residues gastroscopy observation field and rinsing. It should be noted that in the gastroscopy before the need to explain with the examining doctor is currently taking drugs, such as the installation of cardiac stents in patients taking long-term aspirin and clopidogrel and other drugs, when the gastroscopy found that the polyps can not be immediately removed, there is a risk of bleeding.