Embedded contraception, also known as the subcutaneous placement of contraceptives, is a slow-release contraceptive with levonorgestrel as its main ingredient. Side effects are mainly due to the slow release of progesterone over a long period of time, and commonly include irregular vaginal bleeding, spotting, headaches, mood changes, functional ovarian cysts, and amenorrhea. The specific manifestations vary from patient to patient, and symptoms gradually improve with prolonged placement and in most cases do not require treatment. For patients who cannot tolerate the side effects, they can take a small amount of estrogen to improve their condition, and if the effect is not satisfactory, they need to remove the implant and replace it with another method of contraception. In recent years, subcutaneous implantation of contraceptives has not been used much, and it is simple to place, with an effective rate of more than 90%, mainly due to vaginal bleeding and emotional changes affecting normal life, which reduces the use of this method of contraception.