Milk powder, as a food, has no immune-boosting properties, so there is no such thing as the best immune-boosting milk powder. Take whole cow milk powder as an example, cow milk powder is a powdered food made from sterilized milk with high nutritional value. The main components of whole cow milk powder are carbohydrates, sugar and protein, of which the carbohydrate content is 38.3g/100g, which is a better source of carbohydrates. And the content of protein is 27.2%, and it is high quality animal protein with high absorption rate, which can be used as a food source of protein. Milk powder is nutritious and beneficial to the body, but consumption of milk powder will not improve immunity, if the immune function is impaired due to disease, it is recommended to seek medical attention in time and under the guidance of the doctor.