Long-term control of diet for diabetic foot patients may cause psychological changes in patients. There have been patients with diabetic foot who conceal the fact that they do not eat after insulin injection in order to achieve the desire to eat fruits and pastries, and eat sweets after the occurrence of hypoglycemia; some patients feel that the disease cannot get better even if they control their diet because of the difficulty in treating the disease, so they let go of their diet, and even intentionally overeat and drink alcohol, etc. All of these need to learn the real situation during ward rounds and conversations with patients in the ward, and provide timely dietary guidance. Check the patients at mealtime to see if their diet is reasonable and give appropriate guidance. If the ulcer area is large, there are many secretions, or patients with systemic poisoning such as fever, consume relatively more energy and protein, we should help patients make adjustments in time. It is neither elevated blood sugar nor adequate nutrition to help the ulcer heal. Without any complications, those who simply have diabetic foot ulcers with large amount of secretions should increase protein intake appropriately; constipated patients should increase fiber-rich foods appropriately, such as cabbage, celery, rape, konjac and other high-fiber foods; proteinuric or renal insufficiency should reduce the intake of vegetable protein, such as soybean products, soy milk, tofu, etc.; under the premise of ensuring stable blood sugar, a high-quality low-protein, high-calorie diet Patients with anemia should increase the intake of iron-containing foods, such as spinach; patients with hypertension should reduce the intake of salt; patients with hyperuricemia should reduce the intake of purines, and should eat less purine-rich foods such as animal offal, broth, seafood, beans, beer, etc., which can be replaced by milk, eggs, fruits and vegetables. In short, diabetic foot patients’ diet control is a double-edged sword, good control is good for patients’ health and recovery of trauma, bad control will add to patients’ misery.