Fetal heart rate is generally between 110-160 beats/min, fast fetal heart rate may be related to fetal development and activity, and may also be influenced by the mother, usually for the following reasons: 1, more fetal movement: some times of the day the fetus is awake and more active, when fetal heart monitoring is performed, there may be results of too fast fetal heart rate; 2, influenced by the mother: such as pregnant women are too nervous, irritable, depressed, mental stress When the mother is too nervous, agitated, depressed, mental stress, or after taking certain drugs, there may be contractions to stimulate the fetus, thus increasing the fetal heart rate; 3, hypoxia: during pregnancy, the fetus has a small range of motion inside the uterus, and the hypoxia occurs after being compressed, and there may also be hypoxia caused by the umbilical cord around the neck, and the fetal heart rate may be too fast in the early stage of hypoxia. If the fetal heart rate is fast, there is no need to worry and regular review of the fetal heart rate can be done. If the fetal heart rate passes the review and is not accompanied by high risk factors, then regular maternity checkups and daily attention to fetal movement can be done.