The appearance of many diseases can be hypertension, as follows: First, endocrine system diseases, such as hyperthyroidism, primary aldosteronism, Cushing’s disease, and pheochromocytoma, which can manifest as secondary elevation of blood pressure. Second, renal hypertension, a variety of nephritis, nephrotic syndrome leading to renal insufficiency, renal failure, further increase in blood pressure. Third, renal arterial hypertension, the appearance of renal artery stenosis is often hypertension. Fourth, aortitis, which can also manifest as hypertension. Fifth, nocturnal sleep apnea hypoventilation syndrome, which leads to metabolic dysfunction, and high blood pressure is one of its manifestations. Sixth, there are some diseases, such as neurological and psychiatric diseases, menopausal women and patients with stress and anxiety, as well as intracranial lesions, can manifest as hypertension.