Glucose is the main source of energy for the human body, glucose to water to drink can replenish energy and body fluids, glucose solution can treat dehydration, when the body is a large amount of fluid loss, you can glucose to water to drink, such as diarrhea when the loss of fluids, traumatic injury loss of fluids and so on. It can also relieve hunger, when prolonged starvation causes starvation ketosis, you can glucose to drink water to treat starvation ketosis. When hypoglycemia occurs, glucose can be corrected by drinking glucose to water when the patient is awake. Glucose can induce potassium ions into the cells, so drinking glucose liquid can treat high blood potassium. However, glucose to water is not easy to drink for a long time, long-term drink will make the body too much energy, leading to obesity, pediatric long-term drink will also cause anorexia, in addition to long-term drink to water glucose will cause low potassium, low sodium and low phosphorus anemia, resulting in electrolyte disorders.