Barley leaves have a certain auxiliary function, but it is not ideal to rely solely on this function. To lose weight, we must eat reasonably and exercise scientifically. In terms of diet, we should strictly observe and develop the eating habit of "eat well early, eat well at noon and eat less at night", eat less sweets, chew slowly to make it easy to digest, drink more water, eat more fruits and vegetables and eat less meat, and do more than half an hour of beneficial exercise every day, such as running and swimming.