目的:通过服用甘露醇和番泻叶两种不同泻药作肠道准备;;对照它们的临床反应和泌尿系X线片子的质量;;评价它们的特点;;以获得较佳的KUB或和IVU肠道准备的药物。结论:甘露醇组的平均大便次数、排便时间和腹痛人次明显比番泻叶组少;;且不影响睡眠;;清晰度、积便积气率和X线片质量与番泻叶组比较;;有显著性差异。讨论:甘露醇法作为腹部X线拍片的肠道准备药物具有反应轻、片子质量高等特点;;应首选。同时也应注意其用法 OBJECTIVES: Prepare for bowel preparation by taking two different laxatives of mannitol and senna; control their clinical response and the quality of urological X-ray films; evaluate their characteristics; and obtain better KUB or IVU bowel Road to prepare the medicine. Conclusion: The average stool frequency, defecation time and abdominal pain in mannitol group were significantly less than those in the senna group; and did not affect the sleep quality; the sharpness, the product of pneumoperitoneum and X-ray film quality compared with the senna group; ; There are significant differences. Discussion: Mannitol as a preparation for abdominal X-ray film has the characteristics of light reaction, high quality film ;; should be preferred. At the same time should also pay attention to its usage