Vaginal ultrasounds are safe in early pregnancy, and should be chosen with caution in cases of vaginal bleeding. Vaginal ultrasound and B ultrasound belong to the same kind of ultrasound examination, using the same instrument, only the probe put in a different position, vaginal ultrasound is to put the probe into the vagina, not the abdomen, can be better on the uterus, ovaries and other reproductive organs to check, and do not need to hold urine, the image is clearer, more accurate, more suitable for the use of the examination of the early stages of pregnancy. Medical use of ultrasound is low-intensity, below the safety threshold; early pregnancy checkups are short, usually no more than 3 minutes, and are non-stereotyped glide checkups, which are basically safe for the embryo. Therefore, it is generally recommended to perform a negative ultrasound in the early stages of pregnancy, and abdominal ultrasound can be used if there are patients who have vaginal bleeding and are more mindful of it. During pregnancy, it is necessary to visit the doctor regularly for various examinations, which is good for the fetus’s body, and if there is any abnormal reaction, it is necessary to consult the doctor in time.