Typically, hyperthyroidism can cause high blood pressure. Hyperthyroidism can cause high blood pressure because increased thyroid hormones cause sympathetic excitation, which can lead to enhanced myocardial contractility either directly or indirectly by increasing myocardial sensitivity to catecholamines. Enhanced myocardial contractility leads to an increase in cardiac output, resulting in an increase in systolic aortic pressure and systolic blood pressure in the heart. In general, hyperthyroidism-induced hypertension tends to be more common than simple systolic hypertension, and is more common in the elderly population, where clinical symptoms of hypertension are present in addition to hyperthyroidism symptoms, manifested as dizziness and headache. If the patient has a long history of the disease, it can cause complications that may lead to abnormalities in the heart, cerebral vessels, renal arteries, and fundus. Dietary principles for hyperthyroidism patients during the treatment period are avoiding iodine, low salt, low cholesterol diet, and should quit smoking and drinking, to ensure that the mood is comfortable, do not stay up all night, pay attention to rest.