Drinking green juice in the morning on an empty stomach is better for the body because there is no excessive material in the body and gastrointestinal tract when fasting, which can effectively make green juice absorbed, and green juice is rich in many nutrients, the main ingredient is young barley leaves, which can effectively cleanse the intestinal tract and expel foreign substances from the body, and can also promote digestion, defecate and relieve constipation, etc. When drinking on an empty stomach, it can also effectively relieve people’s hunger. Green juice is also suitable for drinking at night before going to bed, it can effectively relieve insomnia and relax the spirit, which can make patients sleep well and relieve the symptoms of insomnia. Drinking green juice is equivalent to eating vegetables and fruits, which can replenish vitamins and promote the peristalsis of the intestines and stomach to achieve the effect of improving digestion, but usually we should also pay attention to our eating habits and eat less greasy things.