Two types of ultrasound changes are suggestive of benign thyroid nodules: (1) purely cystic nodules; and (2) spongy nodules consisting of multiple vesicles occupying more than 50% of the nodule volume, which are benign in 99.7% of cases. Ultrasonography can assist in identifying benign and malignant thyroid nodules, and the ability to do so is dependent on the sonographer’s clinical experience. For thyroid nodules that are suspected to be malignant by ultrasound, fine needle aspiration of the thyroid can be performed to clarify the nature of the nodule. Fine-needle aspiration biopsy can be considered for all thyroid nodules with a diameter of >1 cm; fine-needle aspiration biopsy is not routinely recommended for thyroid nodules with a diameter of <1 cm. Thyroid nodule patients are recommended to go to regular hospitals, cooperate with the doctor to improve the relevant examination, active treatment.