Do gastroscopy drink anesthetics is mainly surface mucosal anesthesia drugs, there are lidocaine gel paste, dacronine hydrochloride gel paste and so on. Lidocaine gel paste and dacronine hydrochloride gel paste are local anesthetic drugs, applied to gastroscopy mainly plays two roles, on the one hand, it can reduce the patient’s discomfort when accepting the insertion of gastroscope. On the other hand, it can also reduce the mucus secretion of the stomach and esophagus, eliminate the foam in the stomach, so that the doctor can clearly see the condition of the stomach, duodenum and esophagus mucosa during the examination. Generally, it is recommended to take the anesthetic drug orally fifteen minutes before the gastroscopy, and don’t drink or eat after taking the drug, so as not to affect the anesthetic effect. After taking the oral anesthesia medication, if you experience any discomfort, you should promptly inform the doctor next to you and take care of it as soon as possible.