Subacute thyroiditis is short for subacute thyroiditis. Its cause is mainly a viral infection and is often complicated by upper respiratory tract infections and gastrointestinal infections, so many people are initially misdiagnosed as having a cold or gastroenteritis and are only diagnosed when localized pain in the thyroid gland appears. Therefore, it is necessary to raise awareness of subthyroiditis. There are three types of inflammation of the thyroid gland: acute, subacute, and chronic. Acute thyroiditis is rare today with the widespread use of antibiotics; subacute and chronic are common. Subacute is subthyroiditis; chronic inflammation is Hashimoto’s disease. In the past, it was generally believed that subacute thyroiditis was a self-limiting disease, i.e., it could heal on its own, even without treatment, mostly within a month, and no hypothyroidism would occur. However, in the current clinical situation, the course and prognosis of the disease have changed, and some patients can have it repeatedly for six months or even a year; moreover, many patients develop hypothyroidism. So the disease is also changing with the times. In clinical practice, many patients recognize that taking Chinese medicine for subluxation is a good choice. First, Chinese medicine does not have the retreating recurrence of hormones; second, Chinese medicine is significantly better than western medicine in terms of antiviral; third: Chinese medicine can regulate the overall treatment. Patients taking hormones can also add herbal medicine, which itself can increase the effectiveness and reduce the side effects, help reduce the amount of hormones, and be used to prevent the recurrence of the disease in the process of hormone reduction.