Gynecological ultrasound and Yin ultrasound are both suitable for examining gynecological diseases, however, the examination characteristics and suitable population of gynecological ultrasound and Yin ultrasound are different, so they have their own advantages in clinical examination and should be selected according to specific requirements. 1. Examination site: Gynecological ultrasound is generally examined on the exterior of the abdomen and can observe the location of the female uterus, ovaries and fallopian tubes, while Yin ultrasound needs to probe into the vagina for examination and can not only observe these locations, but also observe the cervical condition. It can be used to diagnose cervical cysts and cervical fibroids. 2. Preparation before examination: Gynecological ultrasound requires patients to hold urine before examination for the accuracy of the examination results, while ultrasound before examination does not require holding urine, so the preparation before examination is relatively simple. 3. Gynecological ultrasound; women who have sex, wounds and scars in the abdomen can have a pubic ultrasound; 4, image resolution: gynecological ultrasound has a lower image resolution because you need to hold urine during the examination, while pubic ultrasound is a high frequency probe and the probe is closer to the uterus and ovaries during the examination, so the image resolution is higher. Therefore, these two types of examinations have their own advantages and disadvantages, and women who need gynecological examinations can choose the examination method that suits them according to their own situation and the clinician’s advice.