近年来剖宫产人数有增无减，而目前剖宫产的术式多选择子宫下段，子宫恢复正常后瘢痕即位于子宫最狭窄的峡部。这对生产后的人工流产术造成很大的困难，同时也增加了子宫穿孔的机会，为了避免子宫穿孔，我们应做到以下几点：①要认真了解剖宫产的原因、术式以及产后恢复情况； In recent years, the number of cesarean increases unabated, and the current choice of cesarean section more than the lower uterine segment, the uterus is normal after the scar is located in the uterine isthmus isthmus. This has caused great difficulties in post-production abortion, but also increases the chance of uterine perforation. In order to avoid uterine perforation, we should do the following: ①We should carefully understand the causes of caesarean section, surgical procedures and postpartum Recovery situation