The incidence of thyroid cancer is increasing, especially in young women, so many people have concerns about pregnancy after surgery. At present, post-operative thyroid cancer does not affect pregnancy. The main thing to note during pregnancy is that levothyroxine sodium tablets should be taken for a long time after surgery and should continue to be taken during pregnancy without reducing the dosage. After 4 months of post-operative pregnancy, thyroid function should be reviewed every 3 months. If Iodine-131 has been done, you should not get pregnant within 6 months after Iodine-131 treatment.