Electrolyte bulk that is compounded polyethylene glycol electrolyte bulk, drink has not been able to drain clear water, you can continue to drink water or follow the doctor’s instructions to add a laxative or joint use of drugs to promote gastrointestinal dynamics. Colonoscopy is an important tool in the diagnosis and screening of colorectal lesions, and its diagnostic accuracy and therapeutic safety depend largely on the quality of bowel cleansing. During oral intestinal preparation medication, in order to achieve the quality of bowel preparation, it is important to ensure that adequate amounts of water are taken in addition to adequate laxatives, with a minimum of 2,000 milliliters of water. If the laxative is not discharged after all the laxatives have been taken, you can continue to drink water, but the total amount of water should not exceed 4,000 milliliters, the specific amount of water should follow the instructions for taking the drug or follow the doctor’s advice. In addition, for some patients with chronic constipation using the general bowel preparation method is less effective, can be used in divided doses of polyethylene glycol electrolyte bulk, the use of laxatives in advance (such as senna, phenolphthalein tablets, etc.), or the joint use of gastrointestinal stimulation of the dynamic drugs (such as mosapride) to improve the effect. It is recommended to consult a medical professional and follow the doctor’s instructions to avoid blind self-medication.