I. Postoperative rehabilitation: 1. Adjust your mind, have a happy mood, take sufficient rest, and resume work 2 weeks after surgery. 2.Strengthen the neck activity to prevent scar contracture. 3.Pay attention to abnormal, hyper or hypothyroidism of thyroid function. 4.Review regularly, once in 2 weeks, 1 month, 3 months, 6 months, 12 months after surgery, and once a year for 3 years afterwards. Diet 1. It is advisable to eat more foods with anti-thyroid cancer effect: poria, yam, shiitake mushroom, monkey head mushroom, fig, cicada, radish, rhizome, apricot, konjac, sea cucumber, kelp and dimple meat of cattle, sheep, deer and other animals. 2, it is appropriate to eat more food with immunity-enhancing effect: sweet almond, persimmon, asparagus, barley, snapper, turtle, walnuts, shiitake mushrooms, mushrooms. 3, it is advisable to eat foods with the role of strengthening the spleen and water, such as walnuts, black soybeans, yams, leeks, lychees, mulberries, green fish, shrimp, tamari, pork and lamb kidney, bird meat, quail eggs, pomegranate, plums, barley, lentils, yams, konjac.?