Fetal abortion may occur at 17 weeks of pregnancy, but the probability of fetal abortion is relatively low. Fetal abortion may occur throughout pregnancy, but usually it is likely to occur before 10 weeks of pregnancy, and the chance of fetal abortion after 10 weeks of pregnancy is low, so pregnant women should not have too much mental stress. To prevent embryonic arrest in daily life, pregnant women should avoid living in a radioactive environment or high temperature for a long time, keep the room quiet and avoid noisy, and avoid exposure to toxic substances during pregnancy. If you are a woman who smokes or drinks alcohol, you should quit smoking and drinking, and you should develop good habits in life and avoid staying up late. In addition, pregnant women in the 17th week of pregnancy should pay attention to balanced nutrition, eat more fresh vegetables, as well as foods with high calcium content, such as milk, fish and shrimp to supplement trace elements, because this is a critical period for fetal bone growth. You can also prevent the occurrence of gestational diabetes by controlling your weight during pregnancy through proper exercise. If a pregnant woman experiences cessation of fetal movement, lower abdominal cramping with a small amount of vaginal bleeding, or coffee-colored or dark red bloody leucorrhea, it is possible that the fetus has stopped developing and she needs to go to the hospital in time to determine the condition of the fetus by doing an ultrasound examination. If the fetus has stopped developing, induction of labor should be done in time to avoid the dead fetus being in the uterine cavity for too long, leading to coagulation dysfunction and causing DIC.