Most hypothyroidism is a permanent disease that requires lifelong medication. Only a small percentage of hypothyroidism, such as subacute thyroiditis and drug-induced hypothyroidism, can be cured after treatment. The main treatment for hypothyroidism is thyroxine replacement therapy. At present, dry thyroid tablets and levothyroxine tablets are commonly used in China, which are satisfactory, cheap and simple to take. The dosage should be increased gradually according to the systemic symptoms and laboratory tests until the systemic symptoms disappear and T3, T4, FT3, FT4 and TSH return to normal. Thereafter, maintain this dose for life and do not stop the drug easily, otherwise, the original disappeared symptoms may appear again within 1 to 3 months. If symptoms such as panic, arrhythmia, insomnia, irritability and excessive sweating occur during treatment, the dose should be reduced or checked at the hospital. If you forget to take the medication once in a while, there is no need to make up for it, and there is no need to increase the dosage when you take it next time, just take it according to the previous dosage. In addition, even if all the symptoms disappear after taking the medication, you should go to the hospital regularly to recheck the level of thyroid hormone in your body and adjust the dose of medication according to the test results.