Thyroid ultrasound is to look at the lower front of the neck. The thyroid gland is an endocrine organ located in the front of the neck, on both sides of the trachea, and under the thyroid cartilage in the neck, and can play a role in secreting thyroid hormones, promoting growth and development, and increasing nerve excitability. Thyroid ultrasound is used to observe the size and shape of the thyroid gland, the presence or absence of abnormal echoes and the distribution of blood flow, and to check for the presence of thyroid pathology. The examination site is the location of the thyroid gland, i.e., the anterior and inferior part of the neck. The cervical lymph nodes may also be examined if necessary. Patients who need thyroid ultrasound should actively cooperate with the doctor’s examination, and if there are abnormal results, it is recommended to go to the hospital in time.