According to the inquiry, Huakang official website learned that fasting is 6 hours before general anesthesia, and water is forbidden for 4 hours. If you drink clean water, the physique of the elderly or children will be slightly different for only 2 hours, provided that you drink clean water and drink any water within 2 hours. It is required to eat early, eat less, eat less fiber and eat less meat on the night before general anesthesia.

The water ban time for drinking milk and fruit juice is different. It takes 6 hours for drinking milk, 4 hours for drinking fruit juice, 2 hours for fasting with clean water, 8 o'clock for surgery, 6 o'clock for drinking water, 4 o'clock for drinking fruit juice, and 2 o'clock for drinking milk.