Fetal heart monitors usually have two probes, one to detect the fetal heart and is placed in the area where the fetal heart is evident. The other probes contractions and is placed at the bottom of the uterus. When the pregnant woman feels fetal movement, she can press a button to record a fetal movement. Usually the fetal heart monitor has a detailed instruction manual that the pregnant woman and her family can follow to monitor the fetal heart. Generally the fetal heart monitor has two probes, one is used to detect the fetal heart, need to be placed in the obvious part of the fetal heart. The other one is used to detect contractions and needs to be placed at the bottom of the uterus. When the pregnant woman feels the fetal movement, press a button, the fetal heart monitor can automatically record a fetal movement. When performing fetal heart monitoring, pregnant women should take care to relax and follow the doctor’s instructions. Usually 20~40 minutes of dynamic monitoring, you can understand the fetal heart and fetal movement status. If there is any abnormality of the fetal heart in the clinic, it is recommended to go to the hospital in time for medical treatment under the doctor’s instruction.