Hypertension is a multifactorial and individual disease, the causes of hypertension are mainly the following: 1, genetic factors, when both parents have hypertension, the offspring will have an increased chance of hypertension, which may be related to the existence of dominant genes. 2, environmental factors, including dietary habits, smoking and mental and emotional aspects, such as the occurrence of hypertension is often related to the level of sodium and salt intake in the diet, as well as fatty acid content. The blood pressure may also increase due to the stimulation of sympathetic nerves and the release of norepinephrine, as well as the increase in blood pressure due to mental tension and stress. 3.