The accuracy of abdominal ultrasound is close to 100%, which is the gold standard for diagnosing early pregnancy. As early as 35 days after menopause, gynecological ultrasound can see the gestational sac in the uterine cavity, confirming the diagnosis of early pregnancy; at 6 weeks of gestation (42 days after menopause), the embryonic buds and the primitive cardiac tube pulsation can be seen, confirming the diagnosis of intrauterine live fetus. However, when there is a high clinical suspicion of pregnancy, if the gestational sac is not found on ultrasound, pregnancy cannot be completely ruled out, and it is possible that the examination time is too early or ectopic pregnancy, which needs to be reviewed periodically. Clinical suspicion of pregnancy, generally need to be combined with blood or urine human chorionic gonadotropin positive, gynecological ultrasound to see the gestational sac and the primitive heart tube beat in order to confirm the diagnosis of normal early pregnancy. Once the diagnosis of pregnancy is made, regular pregnancy checkups are required, and good pregnancy care is beneficial to the health of the fetus and the mother.