It is recommended that each person with hypertension should not consume more than 6g of salt per day, and the amount of salt in a flat cap of ordinary mineral water is 12g. After removing the gasket from the cap of a beer bottle, a flat cap is 6g of salt, which makes it easier to control salt in ordinary cooking. After eating salty food, you often feel dry mouth, so you will drink a lot of water, increasing blood volume and not easy to discharge water. Blood pressure rises, and blood pressure increases. The relationship between salt and blood pressure is relatively close, and limiting sodium intake can help hypertensive patients to lower blood pressure treatment. It is recommended that patients with hypertension eat a light diet. Studies have shown that reducing sodium intake can lead to a 2-8 mmHg drop in systolic blood pressure, and patients who are salt-sensitive benefit more significantly from salt restriction.