Patients with hypertension are generally not suitable for diving, diving when the water pressure changes, which can cause a significant increase in blood pressure, which can seriously cause cerebral hemorrhage. Hypertensive patients with stable blood pressure control and like to dive, you can do simple snorkeling, snorkeling diving pressure changes are not large, the impact on blood pressure is relatively small. Hypertensive patients do diving before, pay attention to the antihypertensive drugs taken, in general it is best to avoid taking diuretics and beta-blockers, diuretics are likely to lead to a reduction in blood volume of patients, diving is more likely to cause patients dehydration, it is not recommended to take beta-blockers, diving after taking will affect heart function.