The difference between vitamin B and vitamin B1 is that vitamin B1 is a classification of the entire B vitamin family, for example, in addition to vitamin B1, there are also vitamin B2, B6 and B12 in the B vitamin family, so B1 is only a classification of the entire B vitamin family. Vitamin B1, also known as thiamine, has an important protective effect on the nervous system and the heart system. If vitamin B1 is deficient, it is likely that foot disease will occur. Foot disease is a disease that mainly refers to cardiac edema and neuro-metabolic disorders. Thus, vitamin B1 is only a classification among the entire B vitamin family.