The main reason why thyroiditis is not a good idea to take hormone drugs is that it is related to improper use of medication, failure to treat the cause, and the severity of the condition. 1. Improper use of drugs: during the application of drugs, unauthorized stopping, reducing or increasing the amount of drugs, will affect the effect of the drug, and then appeared to be the case of not seeing the effect. 2. Failure to treat the cause: The application of hormone drugs has a certain effect on autoimmune thyroiditis. However, for secondary thyroiditis and thyroiditis caused by viral infections, it is difficult to improve the condition and should be treated with other drugs. 3. Serious condition: In some patients with serious condition, the thyroid gland is so enlarged that medical treatment may not be able to control the condition, and surgery or other methods of treatment are needed. In this case, the application of hormone drugs, will not have much effect. In this case, timely medical examination should be carried out, combined with the cause of the disease, to take targeted treatment.