Heart tube pulsation is not fetal heart, although both can determine the condition of the fetus, heart tube pulsation reflects whether the fetus is alive or not, and fetal heart reflects the specific state of the fetus. Cardiac tube pulsation refers to the fetal heart and blood vessel pulsation, which is not only an important organ for early fetal development, but also an important indicator of fetal survival in the uterus. Generally, the examination of the gestational sac can be done at 2 months or above. If there is a heartbeat during the examination, it means that the fetus is alive; if there is no heartbeat, it means that the fetus is dead. Fetal heartbeat is the heartbeat of the fetus, mainly reflecting the state of the fetus in the uterus, if the fetus has a lack of oxygen, the fetal heart will change. The normal fetal heart rate is 110 to 160 beats per minute, which can be detected by Doppler stethoscope, ultrasound Doppler fetal heart rate monitor, fetal speech monitor and other instruments, but with the growth and development of the fetus, the position of listening to the fetal heart will also change. Pregnant women are advised to test the fetal heart tube pulsation and fetal heart regularly under the guidance of a doctor to properly determine the condition of the fetus.