The Mannion Ring refers to the levonorgestrel intrauterine device (IUD). It is possible that endometrial polyps may grow back after 5 years of levonorgestrel IUD removal. The occurrence of endometrial polyps may be related to high estrogen levels, so if estrogen levels are still high after the removal of the levonorgestrel IUD or for patients with endocrine disorders, ovulation is irregular and progesterone is not produced to antagonize the proliferative effect of estrogen on the lining of the uterus, this can lead to the regrowth of endometrial polyps. For patients with endometrial polyps, irregular vaginal bleeding, prolonged menstruation and infertility are the main manifestations. Therefore, for patients with a history of endometrial polyps, gynecological ultrasound should be regularly reviewed, and if the examination reveals a hyperechoic cavity, we should be vigilant about the recurrence of the polyps, which can be treated with progesterone preparations as prescribed by the doctor, or through surgical procedures, such as removal of the polyps and scraping of the uterus. For patients who are found to have endometrial polyps, it is recommended that they go to the gynecology department of a regular hospital and be actively treated under the guidance of a doctor.