Fetal heartbeat and fetal buds can be detected at 6-8 weeks of pregnancy, but the details need to be analyzed according to the development of the fetus, and there are some individual differences. In early pregnancy, ultrasonography can be used to determine the development of the fetus, to clarify intrauterine pregnancy, and to exclude ectopic pregnancy, trophoblastic disease, pelvic mass and other conditions. A round or oval gestational sac can be seen in the uterine cavity on the 35th day of menopause, and at about 6-8 weeks of gestation, the embryonic buds and primordial heart tube pulsations can be seen. This is often the earliest period in which the fetal heartbeat and buds appear, but the exact number of gestational cycles may vary due to the presence of individual differences in the fetus. In order to better detect the fetal heartbeat and buds and to clarify the baby’s developmental status, it is recommended that pregnant mothers can undergo a pregnancy test at a professional institution.