Blood flow signals are seen during vaginal ultrasound, which proves that there is blood supply to the pelvic organs of women, especially when women are suffering from uterine fibroids or adenomyoma, blood flow signals will be detected under ultrasound, which needs to be combined with symptoms, signs and gynecological examination to consider gynecological diseases. When a woman has ovarian cysts, there are abundant blood flow signals around the cysts that can promote the growth of ovarian cysts. It is best to have blood tests for tumor markers such as CA125, AFP, HE4, etc. to avoid malignant lesions in the ovaries. When women have vaginal ultrasonography, CDFI detects richer blood flow signal, they must pay enough attention to avoid affecting the diagnosis and treatment of the disease.