Under normal circumstances, the embryo will secrete human chorionic gonadotropin and about one week after the embryo is transferred, the pregnant woman’s venous blood will be taken to test the value of human chorionic gonadotropin to determine if she is pregnant. As the concentration of chorionic gonadotropin in the body is not too high during this period, it is not enough to cause an early pregnancy reaction, which will occur as the pregnancy progresses. It is recommended to pay attention to rest after transplantation, avoid strenuous exercise and sexual intercourse, eat a light diet, eat more vegetables and fruits and pay attention to folic acid supplementation after early pregnancy reaction occurs.