The gynecologic ultrasound of women can check a lot of things, mainly in the following aspects: 1. the normal shape and size of female genitalia, which can correctly reflect the size of the uterus, the ratio of the uterus to the cervix, the size of the ovaries and the thickness of the endometrium. 2. it can reflect whether there are organic lesions in the female genitalia, such as whether there are fibroids, uterine adenomyosis, ovarian cysts and fallopian tube cysts. For example, it can reveal whether there are uterine fibroids, uterine adenomyosis, ovarian cysts and cysts in the fallopian tubes, etc. However, it can only observe the presence of organic lesions, but not qualitatively. The ultrasound is not able to determine whether the cyst is benign or malignant, or which kind of cyst is benign, and further examination is needed to confirm this. 3.