How long can you eat after painless gastroscopy, need to be judged according to the patient’s specific situation, if it is only painless gastroscopy generally check the end of two hours can eat. Painless gastroscopy process if only for inspection, do not need to take tissue for pathology examination, etc., generally in the end of the painless gastroscopy two hours after the first small amount of water, if there is no choking, swallowing and other uncomfortable symptoms can eat food, it is recommended to start from the first liquid food gradually transition to ordinary diet. If histologic biopsy or endoscopic polypectomy is needed, then the time of fasting and water fasting should be extended appropriately. After the painless gastroscopy patients can go to the hospital to consult a professional doctor to decide the time of fasting.