Green juice is generally referred to as the young leaves of barley as the main raw material made of drinks, under normal circumstances normal drinking green juice will not cause harm to the body, a large number of people may cause indigestion, kidney function abnormalities need to be careful to eat. 1. abnormal digestive function: green juice is rich in dietary fiber, if the digestive function of the normal population long-term drink a lot of green juice, may cause intestinal peristalsis too fast, affecting intestinal absorption function, thus appearing abdominal pain, diarrhea and other symptoms, for the gastrointestinal function of the weaker population should reduce the intake of green juice. 2. Kidney function abnormalities need to be careful to eat: green juice is rich in potassium, for patients with renal insufficiency, there is a decline in the function of potassium out of the body, the consumption of green juice caused by the rise in blood potassium and so on. Although drinking green juice in moderation helps to supplement dietary fiber, vitamins and trace elements, but for people suffering from kidney disease, weak gastrointestinal function and allergic to green juice is not suitable for drinking green juice, the normal population should also drink green juice in moderation.