When you eat pig’s feet, the collagen contained therein needs to be broken down and digested by the digestive system and cannot be directly supplemented into the body. Collagen is a very important protein in the animal body, widely present in the connective tissue, so pig’s feet are very rich in collagen. However, when people consume pig’s feet, the collagen in them enters the digestive system, under the decomposition of various digestive juices, it will eventually be absorbed into the blood in the form of amino acids and other substances, which can not be directly supplemented for the human body’s collagen. Although pig’s feet contain collagen, but also contains a lot of fat, so eat pig’s feet not only can not supplement collagen, but also may be too much calorie intake, increase the risk of obesity. Although collagen helps to improve the elasticity of the skin, but the oral way is not directly absorbed. It is recommended to maintain adequate sleep, scientific and reasonable diet, and maintain a smooth and happy mood, which is more conducive to the maintenance of skin health.