After gastroscopy alone, a 2-hour water fast and rest is required. If gastroscopic treatment is done, the number of days of rest varies from person to person depending on the condition. Gastroscopy alone means that the gastroscope enters the esophagus and stomach through the mouth for examination, which is a non-invasive examination with little effect on the human body, and generally requires fasting and rest for 2 hours after the examination. If you feel no numbness in the mouth and tongue and no choking and coughing after drinking water, you can eat liquid food on the same day and pay attention to avoid eating spicy, greasy and raw food, usually you can resume normal diet and activities on the next day. If gastroscopic treatment is done, the number of days of rest varies in different cases. For tissue biopsy alone, you usually need to rest for about 2-3 days; if other procedures such as polypectomy or early gastric cancer resection are performed under gastroscopy, the trauma is larger and there is a risk of reissuing blood, so you need to rest for a week or even longer.???? Generally there will be some discomfort after gastroscopy, it is best if you can rest for 1 day, pay attention to a light diet and avoid spicy and stimulating food.