The rapid heartbeat of the mother may affect the heartbeat of the fetus. When a pregnant mother suffers from ischemia and hypoxia, it will cause her heart to beat faster. At this time, the fetus will be affected by the decrease in blood supply to the mother’s heart, and may also suffer from insufficient blood and oxygen supply, which in turn will cause her heart to beat faster. If the mother suffers from organic lesions, may also cause rapid heartbeat, which in turn affects the fetal heartbeat, need to do an electrocardiogram, cardiac ultrasound and other related examinations to identify the cause of the disease, and actively treat the original disease. Pregnant mothers should maintain a regular routine and get enough sleep, avoid staying up late, stay in a good mood, avoid stress and anxiety, eat a light diet, and don’t drink alcohol. Pregnant mothers should go to regular hospitals in time if they feel unwell or have abnormal development of the fetus, identify the cause under the guidance of the doctor, and treat the symptoms to avoid delaying the condition.