Whether it is better to drink more water or less water for high blood pressure, there is no uniform standard, and it needs to be judged according to the actual situation. Under normal circumstances, the systolic blood pressure is 90~140mmHg, and the diastolic blood pressure is 60~90mmHg. When the blood pressure is mildly elevated, and there is no combination of heart failure, nephrotic syndrome, and other diseases, there is generally no need to strictly limit the amount of water to be drunk, and the specific amount of water to be drunk should be appropriately added or subtracted according to the individual’s habits as well as the condition of urine, stool, and sweating. However, when diuretic-dependent severe hypertension or combined with pericardial effusion, heart failure and other diseases, need to limit the amount of water to keep water consumption greater than intake. So when the phenomenon of high blood pressure also need to further check the electrocardiogram, cardiac ultrasound, renal function, renal ultrasound and other items under the guidance of the doctor to determine the amount of water to drink.