When a thyroid nodule is a high-functioning adenoma, the body will be in a state of hyperthyroidism, which may cause symptoms such as increased body temperature, excessive drinking, excessive eating, and weight loss, which can have an impact on conception, the body during pregnancy, and the fetus. If a thyroid nodule is combined with hypothyroidism, it may cause cretinism in the child during pregnancy, and the child may be born with mental retardation. If the thyroid nodules become malignant over time, surgery may be required, which may also affect the fetus. However, if the thyroid nodules are found to be functioning normally and are not considered to be malignant, pregnancy will not be affected. Therefore, if thyroid nodules are found during pregnancy, thyroid ultrasound and thyroid function should be reviewed regularly and treatment should be given according to the results. No spicy food should be eaten during the treatment period.