Hyperthyroidism refers to thyrotoxicosis caused by excessive production of thyroid hormones by the thyroid glands themselves. The dangers of hyperthyroidism are manifold, and the common ones are: 1. In severe cases, the eyelids may not close completely, the cornea may be exposed and corneal ulcers and ophthalmoplegia may form, and even blindness may occur. 3. The death rate of hyperthyroid crisis is more than 20%; 4. The effect of thyrotoxicosis on the heart can lead to tachycardia, increased cardiac output, atrial fibrillation and heart failure; 5. Apathetic hyperthyroidism, mostly seen in elderly patients, has an insidious onset and inconspicuous symptoms, which can easily be overlooked or misdiagnosed, thus delaying the condition and causing adverse consequences, etc.; 6. Hyperthyroidism during pregnancy is harmful to both the pregnant woman and the fetus, and the maternal Thyroid stimulating hormone receptor stimulating antibodies (TSAb) of the mother can stimulate the thyroid gland of the fetus through the placenta causing fetal or neonatal hyperthyroidism. The negative effects of hyperthyroidism on pregnancy are mainly miscarriage, preterm delivery, pre-eclampsia, and placental abruption. In addition, due to the release of immunosuppression after delivery, diffuse toxic goiter can easily occur, which is called postpartum diffuse toxic goiter. As mentioned above, hyperthyroidism has more hazards, and if left untreated for a long time, it may affect the quality of life of patients and even endanger their lives in serious cases. Therefore, patients with hyperthyroidism must undergo regular treatment in a timely manner to avoid unnecessary harm.