Today, with the continuous development of modern science and technology, nutrition, a measure of people’s standard of living, has become more and more popular, and the development of nutritional support in the medical field is also changing rapidly and omnipresent. The implementation of nutritional support therapy has provided a chance and hope for various patients to be reborn, and various nutritional support techniques are being carried out in full swing at home and abroad. We know that nutrition support is divided into parenteral nutrition support and enteral nutrition support, among which there are two ways of enteral nutrition support technology, namely, endoscopic placement of nasal intestinal tube and X-ray assisted ultra-slip guide wire method of placing nasal intestinal tube respectively. Among them, nasal jejunostomy tube placement by X-ray assisted ultra-slip guidewire method is easy to perform, less risky, well tolerated by patients and without adverse complications, and is highly preferred by patients! The author has a deep understanding and good practice of this technique during his one-year study in Nanjing General Hospital of Nanjing Military Region. The X ray-assisted ultra-slip guidewire method of nasal jejunostomy tube placement can effectively solve the problem of enteral nutrition implementation route and provide a non-invasive, safe, effective and feasible way for clinical implementation of enteral nutrition. There are no adverse reactions and complications during the process of tube placement, catheter retention and enteral nutrition, and enteral nutrition support can be implemented immediately after successful tube placement, and the catheter can be left in place for a longer period of time with a stable catheter tip. Therefore, X-ray assisted ultra-slip catheter placement of nasal jejunostomy tube is the first choice to solve the problem of non-permanent enteral nutrition support route. The indications for enteral nutrition support are very wide: such as patients with disrupted functional continuity and/or anatomical continuity of the upper gastrointestinal tract; patients with psychogenic anorexia due to inappropriate weight loss methods; preoperative and postoperative supportive treatment for malnourished patients; patients with severe trauma, burns and other high catabolism; malnutrition due to tumors; gastrointestinal digestive and absorption malfunctions; malnutrition and anorexia in the elderly. Patients treated with tube feeding such as stroke and coma; patients with long-term or severe diarrhea; patients who need liquid diet after oral and ENT surgery; surgery of digestive tube and esophagus. In summary, enteral nutrition has become the first choice of clinical nutrition support in surgery, with the advantages of inexpensive, safe, effective, physiological, easy to operate, easy to promote, etc. It improves the nutritional status of patients, promotes the recovery of immune function and intestinal function of the body, and is simple and safe compared with parenteral nutrition. Complications can be prevented if proper care is taken. As the research progresses, it is believed that enteral nutrition support has a broader application prospect in clinical practice, and nutrition support will no longer be an auxiliary treatment, but will become the main or mainstream treatment.