The birth control ring is usually visible on a vaginal ultrasound. The site of the birth control ring is embedded in the center of the cervix, and the distance from the mouth of the cervix is usually no more than 2 cm. Vaginal ultrasound is a commonly used clinical examination method, and the resolution is higher, so that it can see the pelvis, ovaries, uterus, vagina and other parts of the female patient more clearly, and observe the subtle abnormal changes. So it is possible to see the birth control ring through vaginal ultrasound, but it should be noted that doing vaginal ultrasound is generally recommended to go to the hospital 3-7 days after the menstrual period has been cleaned up, and at the same time, it is not recommended to have sex for 3 days before and after the examination. If you find any abnormality in the position of the ring, it is recommended to consult a doctor in time and deal with the cause of the problem so as not to delay the condition.