Man Yuele generally refers to the levonorgestrel intrauterine sterilization system, installed almost a month ago, has been bleeding, considered to be the effect of drugs, physical stimulation and other physiological factors, generally do not need special treatment. The second consideration is endometritis, birth control ring displacement and other conditions, patients can take medication, surgical treatment. 1. Physiological factors: levonorgestrel intrauterine sterilization system is a kind of special sterilization ring containing progesterone, after the installation of the first few months, most women will appear persistent drip bleeding, as long as the amount of bleeding is less than the normal amount of menstruation, generally do not need special treatment. At the same time, after the installation of the IUD due to the stimulation of the uterine lining, there will be physiological bleeding, generally do not need to deal with. 2. Endometritis: This disease is usually caused by bacterial infection, and gynecological surgeries such as the installation of birth control ring and abortion may induce endometrial infection and cause this disease, and lead to lower abdominal pain and menstrual abnormalities. Patients can take metronidazole, clindamycin and other antibiotic drugs as prescribed by the doctor for anti-infection treatment. 3. Displacement of birth control ring: Displacement of birth control ring will lead to lower abdominal pain, leukorrhea, abnormal vaginal bleeding and other symptoms, resulting in the patient to appear almost a month after the installation of birth control ring, has been bleeding. At this time, patients need to seek medical treatment as soon as possible, through the removal of the contraceptive ring, adjust the contraceptive ring and other ways of treatment. If a woman has been bleeding for a month after the installation of levonorgestrel IUD, as long as the bleeding is not excessive and is not accompanied by symptoms such as pain in the lower abdomen, it is generally a normal condition for the installation of the birth control ring, and there is no need to be overly concerned about it. However, if the patient develops the above mentioned uncomfortable symptoms, it is recommended to consult a doctor for examination in time.