The specific role of vitamin B1 has the following five points: First, vitamin B1 is a kind of promoting drug that helps the normal activities of the nervous system, it can promote the normal development and work of the brain cells of the nervous system, promote the growth and development of the brain, is essential to maintain the stability and normal activities of the nervous system vitamin B family. Secondly, vitamin B1 can treat beriberi, beriberi mostly occurs in infants aged 1-6 months, which is caused by the lack of vitamin B1 in breast milk leading to insufficient intake of children, therefore, vitamin B1 supplement in the mother can prevent beriberi in children. Third, vitamin B1 can relieve fatigue, vitamin B1 can be called mental and neurological vitamin, improve neurological fatigue, improve rest and sleep quality. Fourth, vitamin B1 can also help digestion, it can promote the function of digestion in the body and increase gastrointestinal peristalsis. Fifth, vitamin B1 also helps to alleviate the symptoms of motion sickness and seasickness, and is an effective remedy for motion sickness.