1, sugar powder: the raw material is mainly white sugar, which is made by grinding white sugar and adding corn starch.

2, icing: most icing is made of protein powder, such as protein powder with powdered sugar or lemon juice, white vinegar and so on. However, some ice forms naturally. For example, a layer of white on the surface of persimmon is a naturally formed sugar coating.

Second, the use is different.

1, powdered sugar: commonly used as seasoning or snack. Sugar powder can be divided into white sugar powder and rock sugar powder. White sugar powder is usually used in western food, while rock sugar powder is usually used as sweetener in high-end drinks.

2. Frosting: a kind of icing decoration, which is a sweet coat of cakes and other baked goods, and a smooth milky frosting product crystallized from syrup. It is generally used for icing Napoleon cakes, finger cakes, frosted cupcakes and some cakes.

Third, the production process is different.

1, powdered sugar is ground from white sugar.

2. Frosting is protein sugar, which is obtained after the treatment of powdered sugar.