After thyroid nodule surgery, you should not eat spicy and stimulating food and do not drink alcohol. If you have hyperthyroidism after surgery, you should not eat iodine-rich foods, such as seafood and seaweed. 1. Spicy and stimulating food: After thyroid nodule surgery, patients are advised to have a light diet, balanced nutrition, and eat more fresh vegetables and fruits. Avoid eating spicy and stimulating foods such as barbecue, chili, mutton, etc. Quit smoking and limit alcohol. 2. Iodine-rich food: If combined with hyperthyroidism, it is not advisable to eat iodine-rich food, such as seafood, kelp, seaweed, seaweed and so on. After thyroid nodule surgery, you need to eat properly under the guidance of your doctor to avoid affecting your condition.