The duration of fetal heart monitoring is about 20 minutes, and it needs to be monitored continuously with a fetal heart monitor, and if there is any abnormality, the monitoring time should be extended appropriately. Starting from 32 weeks of pregnancy, fetal heart monitoring will be performed once during each regular check-up, once a week from 37 weeks of pregnancy, and for high-risk pregnant women, fetal heart monitoring will be performed in the obstetrics ward after 35 weeks of pregnancy, and the duration of each monitoring will be at least 1 hour. Fetal heart monitoring requires continuous monitoring for a period of time, dynamic observation and recording of fetal heart rate changes, analysis of the relationship between fetal heart rate, fetal movement and contractions by determining the baseline fetal heart rate and contractions, and overall assessment and analysis of the fetal safety and security in the uterus. Pregnant women should undergo prenatal checkups under the guidance of obstetricians and seek medical consultation at any time if there are any special conditions. In addition, it is important to routinely take calcium supplements after pregnancy to prevent calcium deficiency in the mother and child, relax, take rest, avoid staying up late, and eat more nutritious food and more green vegetables and fruits.