The method is suitable for women who need contraception for a long time and can be used as long as they are healthy. Interference with the menstrual cycle, the implantable contraceptive is similar to the hormonal contraceptive injections and has many similarities. It can make the uterine lining thinner to achieve the effect of contraception, but this method will lead to irregular menstrual cycle and excessive or low menstrual volume, so women should be prepared for this method of contraception. The wound is swollen and bruised, and some women may have swollen and bruised wounds after the procedure, and in serious cases, they may bleed and even become infected with viruses or bacteria. Although buried contraception after years of development has become more than 99% efficient method, but each person’s physique is different, it is likely to interfere with the side effects of the menstrual cycle, in addition there are some women may be wound at the obvious swelling phenomenon, it is recommended to receive timely examination.