The effects of duck liver: 1, duck liver is rich in iron, and is easily absorbed in the form of ferrous iron, and thus through the supplementation of iron, in the prevention and treatment of iron deficiency anemia is very obvious. 2, can relieve vision fatigue, improve vision level, because duck liver is rich in vitamin A, and vitamin A constitutes an important raw material for the retina, and thus in the prevention of vision fatigue, improve vision level is very obvious. 3, supplementation of unsaturated fatty acids. 3, supplement unsaturated fatty acids.