Bleeding for more than 10 days with the IUD is considered to be related to the normal reaction after the IUD, the stimulation of the uterine lining, and the downward movement of the IUD position. 1. Normal reaction after the IUD: some women may experience a small amount of vaginal bleeding within 7 days after the IUD is inserted, which usually lasts for 2~3 days or can be stopped after taking oral medication such as Yunnan Baiyao capsules to stop bleeding. 2. Stimulation of the uterine lining: Since the IUD is a foreign body to the human uterus, it may cause uterine contraction and a small amount of endometrial detachment, so abdominal pain, lumbar acidity, a small amount of vaginal bleeding and other discomforts will occur. 3. Displacement of the IUD: If a woman has heavy menstrual flow or non-menstrual vaginal bleeding, she should be alert to the displacement or dislodgement of the IUD, which may damage local tissues or blood vessels and cause bleeding symptoms. For women who have been bleeding for more than 10 days with the IUD, it is recommended that they go to the gynecology department of a regular hospital, complete the ultrasound and other examinations, and then take active treatment under the guidance of the doctor after clarifying the cause of the disease.