Milk has very important and unique nutritional as well as therapeutic value. Milk is useful in all age groups, even in young age it is considered as a balance diet. Its therapeutic range is as broad as its nutritional value. Ayurveda has mentioned therapeutic value of dugdha in detail according to the color, age, habitat and food pattern of the cow which is not found in any other texts. Here some efforts are given to collect all facts about cow’s milk.