Fertilized eggs need to avoid strenuous exercise, sexual intercourse and random use of medication during the period of fertilization. 1. Avoid strenuous exercise: During the period of fertilization, pregnant women need to avoid prolonged physical labor or exercise, avoid sitting for a long time, and mainly rest in bed. 2. Avoid sexual intercourse: it is generally believed that after the embryo transfer needs to make the uterus rest, sexual intercourse will trigger uterine contraction, thus destroying the embryo that has just been transferred to the body, resulting in the adverse consequences of implantation of the uterus in the tissue embryo. 3. Prohibit the arbitrary use of drugs: during the fertilized egg implantation period, the arbitrary use of drugs may trigger the fluctuation of estrogen and progesterone, so that the fertilized egg implantation failure, the effect of drugs may also have a bad effect on the fertilized egg. During the period of fertilization, if the pregnant woman is not feeling well, she should be guided by the doctor to standardize the treatment to avoid serious consequences.