Fat-soluble vitamins are usually the following: 1, vitamin A: vitamin A exists in the liver of animals, egg yolk of eggs, vitamin A has an important role in the maintenance of vision levels; 2, vitamin D: mainly in deep-sea fish oil, animal offal and egg yolk, vitamin D has an important role in promoting the absorption of calcium; 3, vitamin E: mainly in soybean oil, sunflower oil, olive oil and other cooking oils, 3, vitamin E: mainly in soybean oil, sunflower oil, olive oil and other cooking oils, vitamin E for the maintenance of reproductive function has an important role; 4, vitamin K: mainly in dark green vegetables, such as spinach, leek, vitamin K for the maintenance of normal blood clotting function is very important.