The best time for fetal heart monitoring is when the fetus is active, you can listen to relevant fetal music before performing fetal heart monitoring, and the success rate is higher after proper stimulation of the fetus, generally the fetus is more active in the morning, and in the afternoon the fetus tends to be sleepy and the fetal heart monitoring is more difficult. It is recommended to choose a suitable time for fetal heart monitoring according to the physical condition of the pregnant woman. Fetal heart monitoring can assess the development of the fetus in the womb, detect whether the fetus is hypoxic or asphyxiated in time, and take treatment measures in time if abnormalities are found. The best time for fetal heart monitoring depends on the time when the fetus is active. Generally, the fetus is more active around 9:00 am after meal, and the best test is done at this time. In addition, pregnant women can also record the number of fetal movements at home by themselves, if they find abnormal fetal movements, they must go to the hospital gynecology department for fetal heart monitoring in time. Usually the fetal heart monitoring time is about 20 minutes, pregnant women try to choose a position that they feel comfortable with when performing fetal heart monitoring.