As the symptoms of hyperthyroidism are related to fatigue and emotion, the condition is often alleviated after resting, and the patients wrongly think that the hyperthyroidism is cured, so they just stop taking the drugs. They do not know that hyperthyroidism can be controlled is the role of drugs, hyperthyroidism drug treatment process at least 1 ½ to 2 years, the majority of patients need 3 to 5 years, or even longer, in the clinic encountered hyperthyroidism treatment for 5 years, 10 years, 20 years, or even 40 years is not uncommon. Taking medication for a few weeks or months, after stopping the drug hyperthyroidism is bound to recur, hyperthyroidism still can not get timely treatment, delayed the condition. Hyperthyroidism damage is most obvious is the cardiovascular system. Because there are more T3 receptors on cardiomyocytes, the cardiovascular system reacts more strongly to excess thyroid hormone. We have encountered some patients with unsatisfactory control of long-term hyperthyroidism or irregular treatment in the clinic, due to the long-term action of thyroid hormone on the heart, the heart becomes enlarged, atrial fibrillation occurs, and even heart failure and death. Patients with poorly controlled hyperthyroidism have a negative balance of protein and calcium-phosphorus metabolism, and bone loss is greater than accumulation, and osteoporosis will occur. Middle-aged and elderly hyperthyroid patients complain of bone pain, lumbar pain, lumbar spine radiographs for compression fracture, and easy to fracture after wrestling and falling is also common. Long-term hyperthyroidism control is not good patients, small drug allergies, leukopenia, large bone marrow suppression, liver function damage, and even the whole body organs are affected, functional failure, systemic malnutrition, prone to infection. Under the action of external factors (infection, exertion, various stress), hyperthyroidism crisis will occur, manifested as high fever, diarrhea, delusion and even coma, combined with heart failure, shock and jaundice, the prognosis is not good, the mortality rate is high. The long-term hyperthyroidism is not cured or the first incidence of people do not have to worry about the side effects of iodine-131 treatment, iodine-131 treatment can mostly cure hyperthyroidism, hyperthyroidism, iodine-131 treatment side effects is the possibility of becoming hypothyroidism, but become hypothyroidism is easy to be corrected through the supplementation of the thyroid tablets, and the hyperthyroidism for the body of the hazards of the comparison to be far less, do not listen to individual irresponsible doctors and incorrect interpretation and understanding, do not listen to individual doctors and incorrect interpretation and understanding, and do not listen to individual doctors and incorrect interpretation. Don’t listen to individual irresponsible doctors who don’t have the correct interpretation and understanding, and don’t listen to the so-called good people on the Internet who remind you, only you can weigh the pros and cons and choose the method that is the least harmful to your body is the most sensible.