Clinically, there is no such thing as whether it is better for middle-aged and elderly people to drink milk powder or milk, and middle-aged and elderly people can choose according to their own preferences. Milk and milk powder are both common foods in life. Every 100g of milk can provide energy (332KJ) and contains cholesterol (4mg), carbohydrates (10.3g), vitamin A (18.0μg), vitamin E (0.11mg) and iron (0.3mg), calcium (78mg), selenium (1.30μg) and other nutrients. Every 100g of milk powder contains protein (25.2g), cholesterol (41mg), carbohydrates (62.6g), riboflavin (1.71mg), vitamin C (45.8mg), and minerals such as calcium (1,148mg), potassium (2,526mg), selenium (21.50μg), iodine (54.2μg), and so on. Usually, if middle-aged and elderly people consume milk or milk powder for middle-aged and elderly people appropriately, it can replenish nutrients for the body and help to maintain various body functions. Middle-aged and elderly people can choose according to their own preferences. However, it should be noted that the active ingredients in milk or milk powder are relatively limited and do not have any special effects or efficacy.