Abstract: Inflammatory bowel disease is a chronic non-specific inflammatory bowel disease with unknown etiology, including ulcerative colitis and Crohn's disease, and the patients are often accompanied by malnutrition. This study summarized the epidemiological characteristics, malnutrition mechanism, nutritional cognitive status and needs of patients, and the nutritional status monitoring methods of inflammatory bowel disease, aiming to improve the nutritional nursing level, the quality of nursing and the quality of life in patients with inflammatory bowel disease.