The normal range of fetal heart rate is between 120 to 160 beats per minute. When the fetal heart rate is 185 beats per minute in the 8th week of pregnancy, it suggests that the fetal heart rate is on the fast side, which is not normal. If the fetal heart rate continues to be fast, it may be due to intrauterine hypoxia, ischemia, or fetal dysplasia, or it may be due to too much or too little amniotic fluid, or it may be due to insomnia, insufficient rest, or the presence of infections. Abnormalities in the fetal heart rate at 8 weeks of pregnancy require continuous monitoring of the fetal heart rate. If the fetal heart rate continues to be higher than 160 beats per minute, the fetus should be examined and evaluated by a doctor, and symptomatic treatment should be administered. Women need to maintain a good state of mind during the 8th week of pregnancy, pay attention to rest, strengthen nutrition, monitor the fetal heart rate on a regular basis, and undergo regular obstetric examination, and should consult a doctor in time if the fetal heart rate is too fast.