During chemotherapy patients are advised to follow the principle of small and balanced diet. Patients are advised to increase high nutrition and high energy diet, such as fish soup, tofu, eggs, protein powder, etc., which can be combined with blood-supplementing foods, such as red dates, wolfberry and brown sugar. Gastrointestinal reactions can occur after chemotherapy, patients have poor or no appetite and vomiting can occur after eating, patients should be encouraged to eat as much as possible and take in more nutrients. It is advisable to have small and many meals, coarse and fine, to ensure fruit, vegetables, high quality protein and other energy intake. Avoid spicy and stimulating, fried and other indigestible foods.