Patients with Crohn's disease can eat fish, as it is delicate and delicious, and contains rich protein that provides nutrition. Patients with Crohn's disease should adhere to a diet that is light, nutritious, and easy to digest, consuming more green vegetables such as cucumbers, tomatoes, broccoli, and cabbage. It is also appropriate to increase nutrition, since Crohn's disease is a consumptive disease, and insufficient nutritional supplementation can lead to further weight loss. However, it is essential to avoid overly greasy and spicy foods and to pay attention to dietary hygiene.