Subacute thyroiditis is a condition that requires three considerations: medication, life management, and dietary regimen. 1. Medication: Subacute thyroiditis is a self-limiting disease with a good prognosis. Mild patients only need to apply non-steroidal anti-inflammatory drugs, such as aspirin, ibuprofen, etc.; medium and heavy patients can be given prednisone to relieve thyroid pain. For thyrotoxic manifestations, propranolol can be given; for transient hypothyroidism, levothyroxine replacement can be given appropriately. 2. Life management: Rest, avoid overwork, and maintain sufficient sleep. Maintain a relaxed and happy mood, avoid nervousness, and actively treat underlying diseases. 3. Dietary management: Subacute thyroiditis should pay attention to dietary management, intake of diversified diets, rational allocation of nutrients, supplementation of adequate vitamins, proteins and other nutrients, in order to facilitate the health of the body. Patients with subacute thyroiditis need to go to the endocrinology department in time to receive diagnosis and treatment.