答:外用杀精剂是一种很常见的避孕方法,有可溶性药膜、栓剂、霜剂、泡腾片及胶冻等剂型,同房前将其放入阴道内,可杀伤精子或干扰精子的进入,从而达到避孕目的。由于杀精剂在问:我结婚后计划晚两年要孩子,于是,选用了具有杀精作用的外用避孕药膜避孕。可用这种杀精剂后,却造成我两次意外怀孕。请问杀精剂为何不杀精?如何使用才能达到避孕目的。重庆王伊 A: Topical spermicide is a very common method of contraception, soluble film, suppository, cream, effervescent tablets and jelly and other forms, the same room before putting it into the vagina can kill sperm or interfere with sperm Enter, so as to achieve the purpose of contraception. As the spermicide was asked: I plan to have children after marriage two years later, so the selection of a topical contraceptive film with spermicide contraception. After using this spermicide, it caused my two unwanted pregnancies. Why spermicide is not spermicidal? How to use in order to achieve the purpose of contraception. Chongqing Wang Yi