Gastroscopy done after taking the biopsy 4~6 hours later can eat fluid, semi-fluid food, and gradually transition to a normal diet. Gastroscopy biopsy generally need to fast for 2 hours after the operation, after 2 hours you can drink warm water; 4~6 hours later you can eat fluid or semi-fluid food, such as rice soup, rotten noodles, egg custard and other food. Gastroscopy biopsy is an invasive operation, there will be a small amount of bleeding and tissue edema, generally can be recovered on their own, 3 days after the operation, the diet needs to pay extra attention. Failure to eat according to the doctor’s instructions after gastroscopy biopsy may lead to worsening discomfort, especially if you eat too early, eat spicy and stimulating foods, or eat too much. It is recommended to follow your doctor’s advice on how soon you should eat after a gastroscopy biopsy.