The nutritional value of beef is very high, every 100 grams of beef contains about 0.04 mg of vitamin B, vitamin B2 about 0.14 mg, vitamin B3 about 5.6 mg. Beef is also rich in vitamin B6 and vitamin B12, which can promote the metabolism of protein and branched-chain amino acids. In addition, beef protein in the amino acid variety, reasonable structure, can make up for the lack of lysine in the grain, improve the bioavailability of protein.