Pregnancy 26 weeks intrauterine fetal hypoxia pregnant women themselves no discomfort, mainly fetal heart abnormalities, fetal movement abnormalities, growth stagnation or slowdown, etc. 1, fetal heart abnormalities: under normal circumstances, the fetal heart rate is 110-160 times / min, pregnant women can use the fetal heart monitor to observe the fetal heart condition, if the fetal heart more than 160 times / min, for the early signal of fetal hypoxia. With the further aggravation of fetal hypoxia, fetal heart rate will gradually slow down, there will be a fetal heart rate <110/min, serious fetal heart stop; 2, abnormal fetal movement: fetal intrauterine hypoxia in the early performance of frequent fetal movement, with the aggravation of hypoxia, fetal movement gradually reduced, and even the disappearance of fetal movement; 3, fetal growth stagnation or slow: chronic hypoxia during pregnancy will make uterine-placental perfusion decline, resulting in fetal blood supply Insufficient blood supply to the fetus, resulting in fetal growth restriction or even stagnation, if the fetus continues to grow slowly for two weeks or no growth, further examination is needed.