Not the same. Raw flour and baking soda are not the same, raw flour is a common term in the recipe, mostly used to thicken, hang pulp, production with, in mainland China and China Taiwan use raw flour is potato flour, baking soda, also known as sodium bicarbonate, is a kind of antacid, can be used as a food additive, to play a role in neutralizing the role of stomach acid. So raw flour and baking soda are not the same.