After taking laxatives, yellow water with particles is considered to be food residue in the intestine, indicating that the food residue in the intestine has not been cleaned up, and the colonoscopy can not be done for the time being; food residue will affect the vision of the colonoscopist, and can not see the intestinal mucosa clearly and find intestinal mucosal lesions, thus affecting the results of the examination, and it is easy to miss the diagnosis and misdiagnosis of the situation. Eating laxatives after pulling yellow water with particles should continue to eat laxatives, to be until the discharge is clear water-like is an indication of intestinal cleanup, intestinal preparation is complete, you can perform colonoscopy. If nausea, vomiting, panic and other discomforts occur in the process of taking laxatives, you should inform your doctor and deal with them in time to prevent dehydration or even shock due to taking laxatives.