There are no absolute dietary contraindications for patients with simple thyroid nodules, and they are suitable for eating various vegetables, such as western lettuce, oleander, spinach, coriander, cabbage, shiitake mushrooms, mushrooms, fungus and other vegetables. If the thyroid nodule is combined with hyperthyroidism, it is not suitable to eat iodine-rich food, such as kelp and nori. If the thyroid nodule has autonomous function, resulting in hyperthyroidism, it is advisable to “limit iodine diet”, i.e. consume non-iodized salt, avoid eating seafood, such as kelp, nori. Patients with thyroid nodules should be diagnosed and treated under the guidance of a professional doctor, who can consult a professional doctor or dietitian to formulate an individualized diet plan and follow the doctor’s instructions for standardized treatment.