In general, drinking water will neither raise nor lower blood sugar because ordinary water does not contain sugar, calories and carbohydrates, which affect blood sugar. If a large amount of water is drunk for a short period of time, it may cause an instant drop in blood sugar per unit of time, but the body has a strong regulatory effect and generally does not affect blood sugar, so it will not lead to an increase or decrease in blood sugar. If a diabetic patient is in a state of ketoacidosis or hyperosmolarity, the effect of lowering blood sugar can be achieved by drinking a lot of water and replenishing blood volume. If it is drinking brown sugar water, white sugar water, yellow sugar water, honey water, the blood sugar of the general population generally will not change, because under normal circumstances the body will secrete insulin, metabolize blood sugar and achieve a dynamic balance of blood sugar, so blood sugar generally will not change. While high blood sugar or diabetic patients will generally have higher blood sugar after drinking sweet water, because diabetic patients with insulin secretion disorder or insulin resistance can not make the blood glucose directly into the cells for the next step of metabolism, so it leads to higher blood sugar.