The causes of high blood pressure in the morning and evening are mainly considered to be related to drug factors, physical disease factors or aging. 1. Drug factors: some patients with high blood pressure, in the process of using antihypertensive drug treatment, if the drug is not regular, can not achieve good antihypertensive effect, it is easy to produce the phenomenon of high blood pressure in the morning and evening. 2. Physical disease factors: if the body has diabetes or mental and emotional diseases, as well as insomnia, etc., it is easy to produce high blood pressure in the morning and evening, and may be accompanied by other abnormal symptoms. 3. Ageing: Older people, for example, are prone to reduced arterial vascular elasticity, which affects the regulation of blood pressure, resulting in high blood pressure in the morning and evening. Normally in daily life, pay attention to monitor the blood pressure, if the blood pressure continues to rise, need to take antihypertensive drugs under the guidance of the doctor regularly to control the treatment, so as to avoid the blood pressure continues to be high induced cardiovascular and cerebrovascular diseases.