Barley tea is rich in nutrients needed by the human body, including essential amino acids, trace elements, a variety of minerals and unsaturated fatty acids, the amount of sugar required is very low, regular consumption of barley tea can stop cough and diuretic, replenish the body’s nutritional needs, so as to improve the body, enhance the body’s immunity, to achieve the role of strengthening the body. Barley tea is also rich in vitamin C and vitamin E, which helps to soften blood vessels and promote blood circulation in the body. Barley tea can remove fats, lower blood lipids and cholesterol. Barley belongs to coarse grains, so the dietary fiber contained in it is very good for the human intestinal adjustment. Therefore, drinking barley tea can also adjust the body’s gastrointestinal function, promote digestion and increase the sense of satiety, to avoid excessive calorie intake, and to ensure a balanced and healthy diet. Barley tea has no excitatory effect will not affect sleep, so patients with nephritis can drink but not too much, so as not to increase the water load.