Thyroxine belongs to a kind of thyroid hormone, there are many reasons for high thyroxine, the most common is hyperthyroidism (hyperthyroidism) or thyroiditis, if it is caused by hyperthyroidism, such patients need to avoid foods containing more iodine such as kelp, seaweed, sea cucumber, sea shrimp and other high iodine food, appropriate more calorie-rich food, as well as food rich in protein, fiber and vitamins, which is beneficial to the body . In addition to diet, patients should also pay attention to keep a relaxed mood in daily life, get more rest, and exercise appropriately to enhance their physical fitness. In the case of primary hyperthyroidism, anti-thyroid medications such as methimazole tablets should be taken for treatment. In case of transient hyperthyroidism caused by subacute thyroiditis, anti-inflammatory treatment with drugs such as acetaminophen tablets with antipyretic and analgesic effects is needed to relieve the inflammation and improve the hyperthyroidism.