Walking too much in pregnancy usually does not cause fetal arrest. Fetal arrest is usually due to the abnormal development of the embryo itself, and has little to do with whether or not the pregnancy is overworked or over-exercised. Common causes of fetal arrest 1, embryo chromosomal abnormalities: including chromosome number and structural abnormalities, so that the embryo can not develop normally; 2, female luteal insufficiency: luteal insufficiency is easy to lead to follicular dysplasia, luteal generation is incomplete, the luteal secretion of estrogen and progesterone ratio imbalance, resulting in fetal arrest; 3, thyroid function abnormalities: pregnant women with thyroid hyperthyroidism or hypothyroidism, resulting in hormonal abnormalities, may lead to fetal arrest, miscarriage or fetal malformation; 4, other abnormalities. May lead to fetal arrest, miscarriage or fetal malformation; 4, other: uterine adhesions, uterine fibroids, pelvic infection, immune function abnormalities, history of previous spontaneous abortion, smoking and drinking during pregnancy, etc. can lead to the occurrence of fetal arrest. Treatment 1, artificial abortion: If the fetal arrest occurs before 12 weeks of pregnancy, the pregnancy should be ended as soon as possible through medication abortion or surgical abortion. When the embryo is removed from the uterine cavity, genetic examination of the embryo should be carried out, including chromosome analysis and genetic examination, etc. 2. Induced abortion: If the fetal arrest occurs in the middle of pregnancy, the pregnancy can be discharged through induced abortion or injection of drugs into the uterine cavity. The discharged gestational material should also be subjected to appropriate pathological and genetic examinations. Precautions Excessive walking and overwork, while not usually causing fetal arrest, carries a risk of preeclampsia. Women should pay attention to appropriate exercise during pregnancy, so as not to feel fatigue, it is not recommended to do strenuous exercise, so as not to affect the development of the fetus.