High blood pressure in the morning, also known as increased blood pressure in the morning, refers to the average systolic blood pressure within 2 hours after waking up minus the lowest systolic blood pressure during sleep at night (the average of 3 systolic blood pressures before and after the lowest blood pressure at night) ≥ 35 mmHg. The causes of high blood pressure in the morning can be divided into physiological elevation and pathological elevation, physiological morning blood pressure elevation is regulated by human hormones, pathological morning blood pressure elevation, often associated with mental Psychological factors, neurohumoral regulation imbalance related. 1, physiological elevation: the human body from the sleep state to the waking state and start activities, blood pressure from a relatively low level quickly rise to a higher level, known as the “blood pressure morning peak”, is a normal physiological phenomenon, mainly by the body of some blood pressure hormone regulation, such as adrenocorticotropic hormone, thyroxine, growth hormone, adrenaline, norepinephrine and so on. These hormones are secreted in the human body in a certain rhythm: usually at 0~3 am is the trough of secretion, after 4 am, gradually secretion increases, and at 6~10 am will enter a peak state, human blood pressure by the level of hormone secretion will appear corresponding changes, but will not exceed 140/90mmHg, the ideal state should be in 90/60mmHg~120/80mmHg. 60mmHg ~ 120/80mmHg range fluctuations. 2, pathological elevation: when the disease state, such as hyperthyroidism, pheochromocytoma, Cushing’s syndrome, acromegaly, pituitary tumor, or the patient is in a long-term sustained state of tension, anxiety, sympathetic over-activation, will lead to the above hormone secretion imbalance, secretion rhythm changes, appear morning peak blood pressure is too high, more than 140/90mmHg or more, need to actively treat. The incidence of high blood pressure in the morning is higher and is more common in patients with hypertension than in normal people. Cardiovascular events and all-cause mortality are significantly increased in patients with high morning blood pressure, so it is important to actively control morning hypertension.