Fetal monitor is the abbreviation of fetal heart rate monitoring, fetal monitor failed, there may be the following situations: 1, high fetal heart rate: pregnant women agitation, nervousness, anger, or fever, cardiopulmonary disease and other abnormalities, may cause fetal heart rate increase, it is recommended to take a moderate rest, after calming down the emotions and then monitor; such as testing again after the fetal heart rate is always high, we need to consider whether it is related to fetal hypoxia in early life, can be further examined by fetal ultrasound, according to the doctor’s recommendations for daily care or treatment. Check, according to the doctor’s recommendations for daily care or treatment; 2, low fetal heart rate: If the fetus is asleep during the examination, the fetal monitor may not be able to measure the accelerated fetal heart rate, at this time, you can eat moderately, move the body or stroke the abdomen to wake up the fetus, and then test again after half an hour; if the fetal heart rate is always low after the test, you need to consider whether the fetus has intrauterine hypoxia, intrauterine distress, or the placenta is in trouble, and can be further checked by fetal ultrasound. Fetal ultrasound can be used to further evaluate the state of growth and development, and if necessary, the doctor should decide whether intervention or hospitalization is needed. Try to maintain a calm and relaxed mood, ensure sufficient rest, avoid overwork, late night, stress and other conditions that may affect the normal development of the fetus; pay attention to a balanced diet, adequate nutrition, warm and easy to absorb, do not recommend eating too cold and spicy stimulating food.