Animal offal is an important byproduct in the food industry, rich in protein, vitamins, and minerals, and has a wide range of applications in both traditional and modern foods. Offal can be processed into various food products, such as liver pâté, sausages, and meatloaf, and is also an important source for extracting bioactive components and nutritional supplements. In addition, animal offal has unique value in the pharmaceutical, cosmetic, and feed industries. With consumers' increasing focus on health and nutrition, the processing and utilization of animal offal are becoming more and more important.