First of all, the ingredients of breakfast milk and pure milk are different. There are only three words on the ingredient list of pure milk: fresh milk. The ingredients of breakfast milk are more complicated---milk, water, white sugar, malt extract, peanuts, egg powder, oats, etc., as well as stabilizers, iron fortifiers, zinc fortifiers, and possibly flavors. ...Looking at their nutritional content, there are also subtle differences. The protein content of pure milk is 2.9-3.1, and "high-quality" milk can reach 3.3-3.5; breakfast milk is more than 2.3. Apparently, with the addition of sugar, the protein content drops slightly. However, because other ingredients such as eggs, wheat, and peanuts also contain a certain amount of protein, the overall reduction is not significant. ... Pure milk is a very nutritious food, but it is not perfect. First, if you use it as a staple food, the proportion of carbohydrates is slightly lower, and it is best to combine it with some low-fat starchy foods. At the same time, the natural defects of milk are that the content of iron and zinc is too low, and the vitamin C is too little. So it’s suitable to mix with some nuts and some fruits or vegetables. 1 cup of milk, 2 slices of bread, 1 small handful of nuts, 1 kiwi or other fruit is a perfect breakfast. ... If you have plenty of time for breakfast, it is ideal to drink milk to go with these foods; but what if you are short on time and can't have breakfast? At that time, just drinking a carton of milk was indeed much better than not drinking it at all, but it was not ideal in terms of nutritional balance. If you switch to breakfast milk, the nutritional content will be more in line with the requirements of a meal. ...