In fact, this kind of lactose-free milk is for the life of a part of the production of people, this kind of people are born with the existence of lactose intolerance, because there is lactose in milk, if you have an intolerant reaction to lactose, often it will be easy to lead to the occurrence of diarrhea, which is why some people in life drink milk on the diarrhea of the reason, and lactose-free milk and does not contain lactose components, but it is contains glucose and galactose components, its sweetness is about 70-80% of the general white sugar, and contains more, so from the flavor to be a little sweeter than the average milk.