Cruciferous vegetables can be eaten after thyroid cancer surgery. Cruciferous vegetables, although they contain hydrogen sulfate, will reduce the uptake of iodine by the thyroid gland and affect the treatment of thyroid patients. However, the amount of vegetables consumed by the average person is small and not enough to achieve the suppression of iodine, so thyroid cancer surgery patients can eat cruciferous vegetables. Cruciferous vegetables, including cabbage, purple kale, cabbage, broccoli, radish, bok choy, cauliflower, etc., are rich in minerals, trace elements, dietary fiber, vitamin C and vitamin K, etc., and are beneficial to the recovery of the body after surgery, which can improve the body’s immunity. Thyroid cancer patients after surgery should pay attention to nutritional supplementation, a balanced diet, more iodine-containing foods, such as seaweed, kelp, scalloped fish, etc., as well as protein-rich, vitamin-rich foods, in order to promote the recovery of the disease.