Specific Dietary Pattern for Crohn's Disease Patients Following Surgery

Inclusion Criteria: 1. Diagnose CD according to endoscopy, histology and imaging; 2. Bowel resection for CD 3. Oral nutritional preparations or food can be given after surgery Exclusion Criteria: 1. Plan operation within 5 weeks after surgery; 2. Presence of an ileostomy or colostomy 3. Complete bowel obstruction or fibrous stricture 4. Pregnancy or breastfeeding; 5. Plan to use biological agents within 5 weeks after surgery; 6. Plan to use corticosteroids or prednisone greater than 20 mg per day or equivalent doses of drugs to maintain remission within 5 weeks after surgery; 7. Plan to use probiotics or prebiotics for more than 1 week after surgery; 8. Antibiotics are used for more than 2 weeks after surgery; 9. Hypersensitivity to known components of enteral nutrition; 10. BMI less than 14 or greater than 28 kg/m2; 11. Celiac disease; 12. Complicated with other autoimmune diseases such as diabetes or rheumatic disease, autoimmune liver disease, psoriasis; 13. Mental illness; 14. Malignant tumors 15. Those who are not suitable for body composition analysis (such as pacemakers and metal objects in the body) 16. Participating in other clinical trials 17. The researcher believes that others are not suitable to participate in this study.