You can't. During the operation, in order to ensure the safety and effect during the operation, the doctor will ask the patient not to eat for several hours before the operation. This is because during the operation, the food in the stomach may flow back to the esophagus, or even enter the trachea, leading to suffocation, suffocation and other serious consequences, affecting the health of the operation and patients. Therefore, porridge should not be eaten six hours before surgery.