Thyroid nodule examination items include ultrasonography, blood test, fine needle aspiration cytology biopsy, thyroid nuclear scanning and so on. 1. Ultrasonography: ultrasonography can clarify the location, number, size, shape and surrounding blood vessels of the nodules, and can also assist in determining the benign or malignant nature of the thyroid gland. 2. Blood test: Generally, it is to check the thyroid function, including thyroxine, free thyroxine, triiodothyronine, free triiodothyronine, thyroid-stimulating hormone; it also includes the thyroid tumor marker test, and so on. 3. Fine needle aspiration cytology biopsy: Fine needle aspiration cytology biopsy can help determine the benign or malignant nature of the nodule. 4. Thyroid nuclear scanning: It is mainly used to clarify the function of thyroid nodules and indirectly infer the benign or malignant status of thyroid nodules from the function. It is recommended to improve the relevant examination under the guidance of the doctor.