B vitamins, including vitamin B1, vitamin B2, niacin, pantothenic acid, vitamin B6, folic acid, biotin, vitamin B12, etc. The specific food sources are as follows: 1. Foods rich in vitamin B1, including animal offal, such as animal liver, heart and kidney, as well as meat, legumes, whole grains and nuts; 2. offal, heart, liver and kidney, as well as dairy and egg yolk; 3. Foods rich in vitamin B12, including animal foods, such as meat, animal offal, fish, shellfish and eggs; 4. Folic acid is widely found in animal and plant foods, and is most abundant in green vegetables and yeast. As long as a balanced diet, reasonable nutrition, not picky, not partial food, generally speaking, not easy to lack of B vitamins.