When doing painless gastroscopy hiccups are considered to be physiological reasons, gastroscopy pumping, indigestion and other causes, need to target to take general treatment, drug treatment. 1. Physiological reasons: mainly caused by the stimulation of diaphragm spasm during gastroscopy, which does not require special treatment and will recover by itself after the examination. 2. Gastroscopic pumping: when doing gastroscopy, it is necessary to pump gas into the stomach cavity, which leads to hiccups, bloating and other symptoms, usually after a period of time after the gastroscopy symptoms will be relieved on their own. 3. dyspepsia: mostly seen in functional dyspepsia, usually because of the usual overeating or eating too much greasy food, and less activity caused by gastric insufficiency, gastrointestinal peristalsis is slow, the hiccups will occur, you can take pro-digestive drugs, such as mosapride, domperidone. All of the above medications may cause adverse reactions, such as rash, itching, nausea, vomiting, etc. If the adverse reactions are obvious, you need to stop taking the medication. In addition, allergic to the above components of the drug is prohibited.