Hashimoto’s hypothyroidism generally refers to hypothyroidism caused by Hashimoto’s thyroiditis. Selenium yeast does not treat Hashimoto’s hypothyroidism. Selenium yeast belongs to the group of selenium supplements for patients with low selenium levels in the body, such as cardiovascular and cerebrovascular diseases, liver diseases, tumors, and other diseases caused by low selenium. Although selenium plays an important role in regulating the metabolism of thyroid hormone levels, and selenium deficiency may lead to thyroid dysfunction, there is no clear clinical study confirming that selenium yeast can treat Hashimoto’s hypothyroidism. Hashimoto’s hypothyroidism needs to be controlled on the basis of the primary disease, follow the doctor’s instructions to take levothyroxine and other drugs to replace the treatment, this drug can alleviate the symptoms of hypothyroidism. Hashimoto’s hypothyroidism patients should actively cooperate with professional doctors for treatment, the use of prescription drugs, need to follow the doctor’s instructions.