Nasogastric feeding is a very common form of enteral nutrition in the clinic, in which a nasal feeding tube is inserted into the stomach cavity through one side of the nasal cavity, and food, water and drugs are injected through the nasal feeding tube. Nasogastric feeding is often used in patients who can not eat, in the clinic or at home oral care is very important, nasal feeding patients due to poor oral self-cleaning ability, oral microbial reproduction, oral care can choose saline and medical gargle, tweezers clamp the cotton ball, dip gargle wet, slightly wrung out so that there is no obvious dripping cotton ball coated with water in the mouth, according to the order of the clockwise or counterclockwise, coated with the mouth of every corner, including the palate and the underside of the tongue. Every corner of the mouth, including the palate and the hidden area under the tongue, 3-5 times each time, once in the morning and once in the evening, each time with a clean cotton ball. It is important to remember that the tweezers must be tightly clamped to prevent the cotton ball from falling into the throat.