Usually if the patient’s heart function and kidney function are normal, drinking water will not lead to increased blood pressure, but drinking water needs to have quantity control, if normal people drink 2500-3500ml of water per day, there will be no increase in blood pressure, but if the patient’s drinking water is too much, such as more than 4500ml or even 5000ml of water per day, there will be secondary sodium and water retention, and there will be Increased blood pressure. In the absence of cardiac insufficiency or hypertension and chronic renal insufficiency, the secondary increase in blood pressure is a transient dysfunction of the blood pressure, which can be restored to normal after the application of diuretics.