1. Name of the medication: 131 iodine 2. Preparation before taking the medication. Patients should avoid iodine-containing foods and seafood, iodine-containing drugs (iodine contrast, iodine) and drugs that affect iodine uptake by the thyroid gland (tazepam, thyroid tablets, etc.) for 3-4 weeks before the examination, and stop anti-thyroid drugs for 1-2 weeks. Iodine (kelp, etc.) is still prohibited until the hyperthyroidism is cured after taking the medication. 3. Do not eat for 2 hours and do not spit for 2 hours after taking medication. 4. Patients with motion sickness should rest until the second day of the trip home. 5. Pay attention to rest and do not engage in heavy physical labor for 2 weeks after taking the medication. 6. Avoid colds, diarrhea and mental stimulation for 2 weeks after taking the medication. If you have a cold or diarrhea, take the medication locally or call for information. 7. Do not squeeze the thyroid gland for 2 weeks after taking the medication. 8. 2 weeks after taking the medication, do not dispose of urine or stool: dilute and discharge in a timely manner. 9. Do not have prolonged contact with infants and children for 2 weeks after taking the medication, and have less contact with others. Try to live in a single room. 10. For women who are not pregnant, they can get pregnant after 1 year without affecting their fertility. 11.The effect of taking the medicine: the effect will appear in 3 to 4 weeks, the heartbeat, sweating and other symptoms gradually reduce; 2 to 4 months later most patients return to normal. The efficacy of 131 iodine treatment is over 95%. The majority of patients can be cured with only one dose, but a few patients need a second treatment. 131 iodine treatment can reduce most of the proptosis, but there are a few proptosis with no change, and very few proptosis can be aggravated. 12. More publicity after treatment. 13.Review time: 3 months, 6 months, 1 year after treatment. Place of review: register the nuclear medicine number and go to the nuclear medicine department of the Luna Hospital. Review cost: about 200 yuan. 14. Special reminder: If you are taking 131 iodine to treat hyperthyroidism, you should register for nuclear medicine and go to the nuclear medicine department of the Lulin Hospital. The cost of taking 131 iodine for hyperthyroidism in nuclear medicine is about 1600 RMB. Treatment is available upon arrival. 15. Ask your physician if you have any questions in time. 16.You can take away the information of 131 iodine treatment for one-time hyperthyroidism and introduce it to others or keep it for yourself.