Patients with thyroiditis can become pregnant, but they must keep their thyroid function within the normal range. During the course of thyroiditis, it can manifest in three phases: hyperthyroidism, euthyroidism, and hypothyroidism. When thyroid function is overactive, it is necessary to maintain thyroid function at a basically normal level, and then plan for pregnancy under the guidance of a doctor. For patients with reduced thyroid function, it is even more necessary to maintain thyroid function within the normal range. It is advisable to consult a doctor and plan for pregnancy only after ensuring thyroid function is normal, as reduced thyroid function can impair fetal intellectual development.