The ph value of the internal environment of a healthy person is between 7.35 and 7.45, which means that our body fluids should be weakly alkaline in order to maintain normal physiological functions and material metabolism. The so-called acidic body is actually a pseudoscience, this science believes that the acidification of the body is the source of all diseases, whether it is cancer or common hypertension, diabetes, gout, are caused by the acidification of the body due to eating more acidic food. And the so-called acidic food range is very wide, such as fish, meat, rice, wine, etc., these are said to be acidic. Especially rice, the staple food of Chinese people, is rendered as the typical representative of acidic food, and it becomes the culprit of disease, in fact, these are not the correct theory. According to the normal nutritional balance, eat less and more meals, appropriate exercise and fitness, to ensure a good state of sleep, to maintain a calm state of mind, this is the normal healthy lifestyle.