The aldose residues in the dietary fiber of black beans can synthesize chelates with minerals in pig's feet and interfere with or reduce the body's absorption of these elements.

Black Bean Pig's Feet Soup is lactation-inducing, and can play a dual role in lactation and beauty for lactating women. It also helps adolescent growth and development and slows down osteoporosis in middle-aged and elderly women.

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Soy protein and soy steroid in black beans can significantly improve and reduce blood fat and cholesterol, thus reducing the probability of cardiovascular disease. Soybean fat is rich in unsaturated fatty acids and soy lecithin, which has the effect of maintaining blood vessels, brain health and preventing the formation of fatty liver.