The implantation of contraceptive pills is also referred to as the implantation of contraceptive pills under the skin, and then the pills are released periodically to provide contraception. This method of contraceptive implantation should be used with particular caution in clinical practice, mainly because irregular vaginal bleeding may occur after implantation, as the pill is mainly an estrogen-progestin combination, which can affect the endometrium and cause irregular vaginal bleeding. If this happens, the only way to stop the bleeding is to remove the implanted pill, even though the clinical treatment is not adequate. In addition, since this contraceptive contains estrogen, it is likely to cause weight gain, mainly water and sodium retention, and obesity, so it is recommended to choose it carefully in clinical practice.