Baking soda can be consumed as a food additive when added to food, but not directly or in excess. Baking soda is the common name for sodium bicarbonate, which is often used as a baking powder added to foods such as steamed buns or doughnuts to make them fluffy. In addition, baking soda also has preservative function to extend the shelf life of food, so baking soda is a common food additive in life. Baking soda is an alkaline substance, and as an alkaline food additive, a small amount of it can neutralize stomach acid and relieve stomach discomfort caused by excessive acid secretion. However, it should not be consumed in excess, or it will cause alkalosis. Baking soda can produce gas in the body, causing hiccups, bloating and other manifestations. And baking soda contains sodium ions, consuming too much will cause electrolyte balance disorders in the body. Therefore, it is not recommended to consume baking soda directly in large quantities. However, when baking soda is added to food as a food additive in life, it is in small doses and can be consumed normally.