Crohn's disease cannot be determined solely by CT scans. A CT scan can be used to assess the general situation, which should then be combined with personal clinical symptoms, routine stool tests, and ideally, colonoscopy and blood tests to make an accurate diagnosis. Crohn's disease is an idiopathic disease, currently thought to be related to genetic factors, and inevitably linked to individual immune factors and dietary habits. A definitive diagnosis can be made through colonoscopy and pathological examination. Care should be taken to avoid consuming raw, cold, hard, spicy, and irritating foods.