Fetal heart monitoring can usually be done at 27 weeks of pregnancy, but it is usually not necessary when the gestational week is small and the rhythm of the fetus is not very good. Fetal heart monitoring refers to the use of a fetal heart monitor to record the heart rate curve of the fetus, and based on its changes, to reflect whether there is a lack of oxygen and other conditions of the fetus in the uterus. Generally, the fetal heart can be detected at about 12 weeks of pregnancy, and fetal heart monitoring is usually done at 28 to 36 weeks of pregnancy. Fetal heart monitoring can be done at 27 weeks of pregnancy, but the fetus is still relatively small, and the monitoring is not very meaningful at this time. Women who are 27 weeks pregnant should pay attention to a balanced diet in their daily life, keep their mood happy, exercise properly, and go to the hospital for regular checkups.