When a woman is having an IUD or abortion, she needs to probe the uterine cavity for size, depth and anterior-posterior position, etc., paying attention to first disinfecting the vulva, vagina, exposing the cervix, and then disinfecting the cervix again, and then gently probing to the bottom of the uterus with a probe along the uterus. The depth of the normal uterine cavity is 6-7 cm, and the uterine cavity is open, if a woman is pregnant, the uterus will be appropriately enlarged and softened, only when a woman is clearly detected in the depth of the uterine cavity, the size of the uterine cavity, before you can choose to put and remove the IUD and abortion, otherwise it will lead to the probe appeared to be too deep resulting in perforation of the uterus, and serious hemorrhage during the operation, a serious threat to the women’s health. When the woman in the detection of the uterine cavity after the end of the surgical operation, pay attention to give hemostasis and anti-infection medication.