Duck gizzards are divided into glandular stomach and muscular stomach. The glandular stomach wall is thin, and the parietal cells secrete gastric acid and various digestive enzymes for soaking and digesting food; The muscular stomach has a well-developed muscular wall, and the inner wall is covered with a hard horny membrane (called chicken gizzard, duck gizzard in Chinese medicine). The inner cavity contains some small sand grains (swallowed by birds), which act like teeth and are used to grind food.
Chinese medicine believes that most people can eat it. Anemia patients are especially suitable for eating. Those with fullness and indigestion in the upper abdomen can eat more duck gizzards. Especially for patients with stomach diseases, eating duck gizzard is helpful to promote digestion and enhance the function of spleen and stomach.