Nutritional therapy is a basic right of human beings and it is the responsibility of medical services to apply nutritional therapy to clinical work. Nutritional therapy is the first-line treatment nutrition is the basis of rehabilitation of all diseases is the cornerstone of human self-healing and anti-injury. As an independent treatment nutritional therapy can not only provide patients with the energy and nutrients needed for disease recovery but also shorten hospital stay reduce complications improve the cure rate and mortality of the disease and have a synergistic effect with other treatments. In terms of medical economic benefits nutritional therapy can reduce the use of medical resources and medical costs and bring economic benefits to the health care system. The nutritional therapy of patients should run through all the time start early detect the whole process and return the nutritional and nourishing foundation of the patients.