近年刮宫产率不断上升，国内报道70年代以前仅为5％～10％，80年代以后逐步上升到30％以上，甚至超过40％[1]。随着剖宫产率的上升，临产后剖宫产率也呈上升趋势，除社会因素外，产程观察不严密，处理不当，也是使临产后剖它产率上升的一个重要因素。我们对1991年1月～1995年12 In recent years, the curettage rate has been on the rise. The domestic coverage was only 5% -10% before the 1970s, and gradually increased to more than 30% and even over 40% after the 1980s [1]. With the increase of cesarean section rate, cesarean section rate after labor also showed an upward trend. In addition to social factors, labor process observation is not rigorous, and improper handling is also an important factor in increasing the yield after labor. We are from January 1991 to 1995 12