In early spring, the weather is cold and hot, many friends have colds that come and go, repeatedly in the whooping clinic, ENT clinic, take some antipyretic medicine, but a fever in the evening, and gradually appear neck pain, panic, sweating, hand tremors, weight loss. This is not a common cold, but subacute thyroiditis. Subacute thyroiditis (referred to as “subacute thyroiditis”) occurs in spring and autumn, is a viral infection induced by a thyroid autoimmune inflammation, mainly in 30 to 50 years old middle-aged women, male and female incidence of about 1:5. Destructive inflammation of the thyroid gland is often found in the upper whistleblower infection after 2 weeks, so it is known as subacute. . However, the actual onset of the disease is more acute after the first 2 weeks of gestation. The main clinical manifestations are high fever, pain in the anterior cervical region and pharynx, sometimes radiating to the submandibular region, behind the ears or neck, etc., and the pain is worse when chewing and swallowing, or the pain runs from the left side to the right side, and the pain is so heavy that you don’t dare to touch it. Due to the inflammation of the thyroid gland leads to a large amount of thyroid hormone stored in the thyroid gland into the bloodstream rapidly, most patients can also develop symptoms of hyperthyroidism. In the later stages, symptoms of hypothyroidism, such as fatigue and hair loss, may occur due to the destruction of the inflammation and a decrease in the thyroid’s ability to synthesize hormones. Until the inflammation disappears and the thyroid gland is rebuilt after the disaster, the thyroid function tends to normalize. The whole process can last up to six months. Because this disease is not a bacterial infection, but a metabolic inflammation, antibiotic treatment is ineffective. Therefore, in the spring, we should strengthen the exercise, enhance the physical fitness, improve the immunity, avoid cold and flu, and effectively prevent the “sub-thyroiditis”. If there are fever, swelling and pain in the thyroid gland, accompanied by excessive sweating, palpitations, mood changes and other hyperthyroidism manifestations, combined with a recent history of upper respiratory tract infection, we should be highly suspicious of “subthyroiditis”. The patient should consult the endocrinologist in time to avoid “sub-methylitis” being treated as “epiglottitis”, “pharyngitis” or “hyperthyroidism”, resulting in misdiagnosis and mistreatment. This can lead to misdiagnosis and mistreatment. Early and standardized treatment can effectively avoid the formation of nodules during the recovery phase of thyroid inflammation or permanent hypothyroidism.