摘要To the Editor:Colonoscopy is currently the most commonly used method for the examination and treatment of intestinal diseases.High-quality bowel preparation is a prerequisite for colonoscopy and usually results in successful colonoscopy regarding diagnostic accuracy,procedural safety,and cost-effectiveness.At present,9-57％ of bowel preparations do not meet colonoscopy standards.Because most of the doctors or nurses in our country have a heavy workload and thus insufficient time to fully explain the details of bowel preparation to the patients,many patients are only told how to obtain bowel preparation medications along with basic bowel preparation instructions or are given a brochure about standard bowel preparation when they make their endoscopic examination appointment.[1]