Nasogastric feeding is mainly used for patients who cannot eat by mouth, patients who refuse to eat, premature infants and patients with critical conditions and swallowing difficulties. Nasogastric feeding is a technique in which a catheter is inserted into the stomach through the nasal cavity, and fluid food, water, nutrient solution and medication are injected from the tube to maintain the patient’s nutritional and therapeutic needs. Nasogastric feeding is mainly used for patients with the following conditions, patients who are unable to eat through the mouth including coma caused by central nervous system damage, oral diseases and after oral surgery, esophageal stenosis, esophageal-tracheal fistula, patients with dysphagia, patients with impaired consciousness caused by certain surgeries or chronic wasting malignant disease. Nasogastric feeding is required for patients who refuse to eat, premature infants and patients in critical condition. If nasal feeding is needed, the patient’s condition needs to be assessed by a doctor and carried out under the guidance of doctors and nurses, so as to avoid adverse consequences for the patient and endangerment of life.