Post-operative thyroid cancer patients should pay attention to the following points in their diet: pay attention to balanced nutrition, fresh food and light taste; control iodine intake, iodine-deficient areas should be supplemented with iodine and eat more iodine-rich foods, such as iodized salt, kelp, nori, shrimp, etc.; eat more fresh vegetables, such as cabbage, celery, etc.; eat more fresh fruits, such as mandarin, orange, chestnut, etc.; avoid spicy food. 1, recipe structure should be reasonable, patient recipes must not be simple and single. Should be more varieties, new patterns, reasonable structure, in the production of recipes, to do as much as possible: light and high nutrition quality combination, soft and easy to digest and rich in vitamins, fresh and food cold, hot, warm and flat taste combination, the total supply and the combination of the patient’s internal organs cold and hot deficiency evidence. 2, cooking methods and eating methods to be sophisticated, trying to enhance the patient’s appetite in the selection of food, production, cooking, should create a good sense of food traits, in taste, color, fragrance, shape, as far as possible to suit and meet the patient’s taste and habits. According to the patient’s digestive ability, we should also take a small amount of meals, coarse and fine, fluid, alternating soft and hard food, and sweet and salty food. Create a pleasant atmosphere when eating, and try to eat with relatives. Before eating, try to avoid the smell of oil and smoke and other adverse stimuli. During the interval between radiotherapy and chemotherapy, seize the favorable opportunity to supplement nutrition when the appetite improves. The total daily calorie intake of cancer patients from food is generally not lower than the minimum requirement of normal people, i.e. above 10 kJ per day, because the protein decomposition in cancer patients is high, the anabolic function is reduced, and the nutrition is in a negative nitrogen balance with insufficient income, so the demand for protein should be increased. Generally, the daily protein intake should be more than 1.5 grams of body weight, and it should be mainly high-quality protein, such as eggs, milk, meat, soy products, etc. After surgery, patients may have nausea, vomiting and reduced food intake, so they can eat some cinnamon, barley, sage, rhizome, yucca, cloud ling and so on. At the same time, they should insist on activities in bed after surgery and insist on whole body exercise after getting out of bed to improve the ability to resist diseases and enhance the function of immunity.