Baking soda, chemically called sodium bicarbonate, is generally used as a food additive and is harmless when consumed properly. However, if consumed in excess, alkalosis may occur. Baking soda is used as a carbon dioxide generator in food, beverage sodas and cold drinks because baking soda will gradually decompose to generate sodium carbonate, water and carbon dioxide gas above 50℃, so it can be used to make cookies and steamed buns as a bulking agent. Baking soda itself is non-toxic, and proper consumption will not harm the human body. However, it should be noted that baking soda to avoid eating too much, the daily recommended serving size of 2 ~ 3g, if otherwise it may cause alkalosis, but also damage to the liver, is not conducive to human health. If you want to add baking soda in food, you need to put into the edible baking soda, avoid adding industrial baking soda.