Cancer patients need to adhere to a light and nutritious diet and reduce the intake of spicy and stimulating foods, raw and cold foods, and pickled foods. 1. Spicy and stimulating foods, such as onion, ginger, garlic, onion and other kinds of food, their stimulating properties will make gastrointestinal symptoms, such as edema and congestion, more serious, and aggravate the digestive burden, leading to regurgitation, vomiting and digestive discomfort. 2. Cold food, cancer patients’ gastrointestinal function is not good, after consuming cold food, it will cause irritation to the intestinal tract, resulting in abdominal distension, abdominal pain and other problems. 3. Pickled food, such as salted vegetables and bacon, will produce carcinogenic ingredients such as nitrite during the production process, which will further aggravate the condition after intake.