Sweet potato starch and sweet potato powder are two different things. Sweet potato powder is a kind of food raw material which is dried and crushed into powder, also known as sweet potato noodles. Sweet potato starch is a starch component extracted from sweet potato. There are differences in raw materials, manufacturing technology, application and taste. Sweet potato powder is mainly used to make Chinese dim sum, and sweet potato powder is mainly used to stir-fry Chinese dim sum, vermicelli and vermicelli.