There are two types of anesthesia for gastroscopy. Conventional gastroscopy is local anesthesia, and painless gastroscopy takes a general anesthesia way of anesthesia. As each person’s individual situation is different, it is recommended that people go to regular hospitals and have the examination under the guidance of professional doctors. 1. Ordinary gastroscopy: the local anesthesia is surface anesthesia. During the examination, people will be nervous, choking, nausea and other uncomfortable symptoms due to the stimulation of the gastroscope on the throat and gastric mucosa. Therefore, many people will have intolerance. 2. Painless gastroscopy: Painless gastroscopy is a gastroscopy under general anesthesia through intravenous injection of anesthetic drugs. People can finish the examination without pain, which is more comfortable and more acceptable. Vital signs need to be evaluated before the gastroscopy, and only those who meet the requirements can undergo the gastroscopy. It is necessary to abstain from food and water for 1 to 2 hours after the examination to avoid choking and aspiration due to unmetabolized anesthesia.