The vaginal ultrasound is safe and generally does not transmit diseases. Vaginal ultrasound is the use of ultrasound through the vaginal route to find out about pregnancy or some other gynecological conditions, and is less likely to be interfered with by other factors such as obesity and abdominal distension, and is more accurate. Vaginal ultrasound is a non-invasive test and will not cause damage to the body after the test. When doing vaginal ultrasound, the patient sets up the examination position, the doctor will put a disposable condom on the ultrasound probe, apply the coupling agent and slowly enter the examination. After the examination, the doctor will change the cushion and disposable condom to ensure that no cross-infection will occur. Ultrasound examination should be carried out in a professional hospital, any discomfort after the examination promptly to the hospital, under the guidance of the doctor symptomatic treatment.