Drinking weakly alkaline water is really good for health. Because the pH value is a number between 0 and 14, indicating the pH value of the liquid. At room temperature, ph value; 7 is alkaline and pH=7 is neutral. In a healthy state, the pH value of the human body is 7.35-7.45 (mainly refers to blood), which gradually decreases with the aging of the human body. When the pH value of body fluid is lower than 7.35, the human body is likely to be in a sub-health state. When it is lower than 7, it will cause major diseases. Only by 6.8-6.7, people's lives will be suspended. It can be seen how harmful acidic constitution is to human health.