Brown discharge after the IUD is due to the birth control ring into the uterine cavity, destroying the small blood vessels inside the endometrium, thus causing bleeding, bleeding due to the amount of relatively small, so after the outflow of the vagina is brown, is generally a normal reaction to the IUD, clinically such bleeding will be clean within a week, and the amount will be very small. If the bleeding is not clean after a week, the bleeding is more or more bright red color is abnormal, it should be considered that the uterine cavity can not adapt to the IUD after the IUD, causing such clinical manifestations, you can take anti-inflammatory drugs under the guidance of the doctor to give treatment, and pay attention to rest in the clinic.