避孕的方法虽然很多,归纳起来不外是应用物理的或化学的方法使精子不能与卵相遇。方法的好坏,首要的条件在于它的避孕效力,其次为简便、无害、价廉、不妨害性感等等。不同方法的效力虽有不同,但是使用的技巧对于效力也有着很大的关系。效力最高的是物理的与化学的二法合用,也就是医生最常推荐的阴道隔,俗称避孕环或子宫帽(图一)与膠冻的合并使用。 Although many contraceptive methods, summed up nothing more than the application of physical or chemical methods so that sperm can not encounter eggs. Method is good or bad, the first condition is that it’s contraceptive effectiveness, followed by simple, harmless, inexpensive, does not affect the sexy and so on. The effectiveness of different methods, although different, but the skills used also have a great relationship. The most effective is the physical and chemical combination of the two methods, which is the doctor most commonly recommended vaginal septum, commonly known as the contraceptive ring or the uterine cap (Figure I) combined with the use of jelly.