实行计划生育是我国的一项基本国策,广大育龄妇女在宫内放置节育器进行避孕,方法简单,安全,效果好,副作用也小,深受广大妇女的欢迎。但脱环和带环受孕多是由于节育器低位和变形所引起。所以动态观察,定期透视是非常重要的,一般于放环后一个及三个月各复查一次,以后每半年复查一次。如发现节育器位置下降或变形,应取节育器或更换。 The implementation of family planning is a basic national policy of our country. The majority of women of childbearing age place contraceptives in the womb for contraception. The method is simple, safe and effective. The side effects are also small and well received by the majority of women. However, the de-looping and band-ring conception mostly due to low and deformed IUD caused. Therefore, dynamic observation, regular perspective is very important, usually one and three months after the release ring each review once every six months after a review. If I find the location of the IUD drops or deformation, IUD should be taken or replaced.