Tea contains tea polyphenols, which can enhance vascular elasticity, reduce blood cholesterol, triglycerides and low-density lipoprotein, and also reduce the ratio of cholesterol to phospholipids, thus achieving the purpose of preventing and treating arteriosclerosis. So patients with hypertension can drink tea. But tea contains caffeine, which will excite the central nervous system, increase the heart rate and increase the burden on the heart. Drinking too strong tea will cause these side effects, which will be unfavorable to patients with hypertension. Therefore, patients with hypertension should be reminded to drink tea properly and avoid drinking strong tea.