Healthy old duck soup is a soup made of old duck and some nutritious Chinese medicines. According to Compendium of Materia Medica, duck meat has the characteristics of "sweet cold, nourishing bone marrow, promoting granulation, promoting fluid production and nourishing five internal organs", "nourishing fatigue, disinfecting and clearing away heat, facilitating urination, eliminating edema, eliminating fullness, benefiting viscera, eliminating sores and swelling, and relieving spasm and epilepsy."