Nasogastric feeding is the feeding of diet through nasogastric tube, which is mostly used clinically for patients who are not suitable for normal diet through oral cavity. For example, major surgery of the head, neck and throat, throat cancer or unconscious patients in coma. It is usually inserted through the unilateral nasal cavity, and the disposable silicone nasogastric tube reaches deep into the stomach, and the empty needle is withdrawn with gastric juice to confirm the correct position, and then the nasogastric tube is fixed. Depending on the condition and nutritional status, a small number of meals are injected daily through the nasogastric tube with an empty needle into a liquid diet or enteral nutrition solution, and water and juice can also be pushed in to ensure normal body requirements. If the nasogastric tube is left in place for a long period of time, it should be changed regularly and prevented from inadvertent dislodgement.