You can eat pumpkin porridge the day before the colonoscopy. Bowel cleansing is needed before colonoscopy, and it is generally recommended to start paying attention to diet three days before colonoscopy, and try to eat without residue as much as possible, which will help to arrive at a better bowel cleansing effect. The commonly used bowel cleansing medication is polyethylene glycol. Usually, you start taking polyethylene glycol to clean the bowel after dinner on the day before the colonoscopy, fast on the day of the colonoscopy, and continue to take polyethylene glycol. Foods that can be eaten before colonoscopy include pasta sheets and various kinds of porridges. It is recommended to avoid foods that are difficult to digest, such as seaweed, fungus, mushrooms and so on. So you can eat pumpkin porridge one day before colonoscopy, and more will not affect the results of colonoscopy. The specific dietary structure before colonoscopy can be consulted with specialized physicians.