Patients with hyperthyroidism need to be actively treated under the guidance of a doctor and become pregnant when their condition is controlled and stabilized, and pregnancy is generally not recommended for patients in the progressive stage of the disease. Hyperthyroidism is a syndrome of a series of symptoms caused by excessive production of thyroid hormones by the thyroid gland itself. Female patients often have reduced menstruation, prolonged cycles, or even amenorrhea, but some patients are still able to get pregnant and give birth. Symptoms of hyperthyroidism in pregnancy are the same as those in non-pregnancy, which are characterized by hypermetabolism, agitation, fear of heat and excessive sweating, flushing of the skin, and rapid pulse. Physical examination reveals elevated skin temperature, protruding eyes, hand tremor, and in severe cases, arrhythmia and enlargement of the heart border. Hyperthyroidism crisis can be induced in pregnant women with untreated or poorly treated hyperthyroidism during labor and delivery or surgical stress, infections, and improper discontinuation of medication. On the contrary, pregnant women with severe or untreated hyperthyroidism are prone to miscarriage and preterm delivery, fetal growth restriction and fetal hypothyroidism and goiter. It is recommended that patients with hyperthyroidism go to the hospital in time, follow the doctor’s instructions for treatment, and get pregnant again after they are well controlled or cured.