There are a variety of teas that can be drunk for high blood pressure and high blood sugar: 1. Catechin in green tea is an astringent component of green tea, which has a strong antioxidant effect and can effectively prevent diabetes and high blood pressure and inhibit the rapid rise of blood sugar after meals in diabetic patients, etc. 2. Black tea has the effects of lowering blood pressure, lowering blood lipids and antioxidants. 3. Tianqi tea has a lipid-lowering effect and can be used as a daily health tea for hypertension and diabetes patients. 4. Corn husk tea has hypotensive and hypoglycemic effects. 5. Honeysuckle tea can improve insulin resistance and is suitable for hypertensive and diabetic patients. The above teas are beneficial to patients with hypertension and diabetes, and can be consumed by patients with diabetes and hypertension in appropriate amounts according to their personal preferences.