In general, if the uterine cavity is particularly large or the menstrual flow is particularly heavy, or if you exercise strenuously after the IUD, and often have movements that increase abdominal pressure such as lifting heavy objects or coughing, there is a possibility that the Mannorrhea ring will move down. Therefore, it is better to deal with the original disease before the IUD, such as patients with adenomyosis, it is better to inject leuprolide or daphylline intramuscularly for 3-6 months, and wait for the uterus to shrink before placing the Mannorrhea. If the menstrual flow is particularly heavy, it is recommended to take oral short-acting oral contraceptives or high potency progestin tablets for 3-6 months to treat excessive menstrual flow, and then place the IUD after the menstrual flow has slowly decreased. In addition, if you have some history of coughing or constipation, it is better to treat the original disease, and you should not exercise strenuously, bear weight or have intercourse after the operation, so as to prevent the Mannorrhea ring from moving down.