After surgery, patients with papillary thyroid cancer should mainly take liquid food, avoid oil frying and deep-frying food in daily life, and avoid high fat, high calorie and high sugar diet. After surgery, patients with papillary thyroid cancer should choose easy-to-digest liquid food (such as porridge, noodle soup, etc.), and the food should not be too cold or too hot, so as to avoid irritation to the operation area. In daily life, patients should choose light diet, avoid oil frying, deep-fried food, high fat, high calorie and high sugar diet. As high iodine diet is a causative factor of thyroid cancer, patients need to take levothyroxine replacement therapy after total thyroidectomy, so it is not recommended to consume iodine-rich seaweed, nori and other foods. You can eat more food rich in high quality protein (such as lean meat, eggs, milk, etc.), fresh fruits and vegetables (such as spinach, lettuce, oranges, kiwifruit, etc.), and avoid too spicy and stimulating, oily and raw food (such as fatty meat, sashimi, chili peppers, etc.), and strictly abstain from smoking and alcohol. It should be noted that many patients with papillary thyroid cancer may survive for a long time after active treatment.