Patients with thyroid nodules without thyroid dysfunction should maintain a nutritious, balanced and comprehensive diet; those with hypothyroidism are recommended to eat low-fat, high-fiber foods; and those with hyperthyroidism should eat a high-calorie, high-protein diet. Patients with thyroid nodules not accompanied by abnormal thyroid function should maintain a nutritious, balanced and comprehensive diet. There are no special contraindications to the diet, and they can eat foods rich in fiber, vitamins and proteins, such as a variety of fruits, vegetables, eggs, and so on. Thyroid nodules associated with hypothyroidism may lead to symptoms such as elevated blood lipids and constipation. These patients are recommended to eat low-fat, high-fiber foods, such as corn, spinach, apples and other fresh fruits and vegetables. However, care should be taken to eat fewer cruciferous plants such as cabbage, cabbage and white radish, which can be cooked and eaten, preferably without dipping sauce. Hyperthyroidism causes a high metabolic state, so you should maintain a high-calorie, high-protein diet, such as milk, eggs, lean meat and other protein-rich foods and rice, noodles and other calorie-rich foods. Use non-iodized salt for cooking, and you should also avoid iodine-rich foods, such as fish, shrimp, seaweed and nori. Patients diagnosed with thyroid nodules should actively cooperate with their doctors and maintain a healthy diet.