From a personal understanding, the main difference between milk powder and milk lies in the production technology and nutritional components. Milk powder is a powdered food made of fresh milk after drying and spraying, and milk is a liquid squeezed directly from cattle. Milk powder will lose some nutrients in the production process, but usually some necessary vitamins and minerals will be added to make up for the loss. When choosing, you need to choose according to your own needs and physical condition.