Fetal arrhythmia may be caused by physiological reasons, but pathological reasons such as fetal hypoxia and organic heart disease cannot be ruled out. Observation, oxygen intake, medication and other treatments can be taken to improve the symptoms. 1. Physiological reasons: Since the fetal heart is still immature, and the fetal heart rhythm is also affected by the emotions of the pregnant woman, the fetus may have a transient physiological arrhythmia. In this case, observation is generally taken, and pregnant women are advised to keep a happy mood, ensure sufficient sleep, and avoid drinking strong tea, coffee and other foods with obvious excitatory effects. 2. Pathological causes: If the fetus suffers from hypoxia in the mother’s body, the fetus may also suffer from arrhythmia, and the pregnant woman may adopt methods such as oxygen inhalation and lying on the left side to improve the symptoms. If there is organic heart disease in the fetus, appropriate treatment is needed. If the fetus has symptoms of arrhythmia, it is recommended to consult a doctor in a timely manner, under the guidance of the doctor, improve the relevant examination, clarify the cause of the disease, and symptomatic treatment.