There is some difference between neck ultrasound and thyroid ultrasound. The difference mainly lies in the scope of exploration, and it is recommended that the ultrasound be performed under the guidance of a doctor. Thyroid ultrasound is generally only for the examination of the thyroid gland as an organ, the examination includes the size of the thyroid gland, internal echoes, location, blood flow, relationship with the surrounding, and whether there is calcification and other lesions, and may also check the peripheral organs of the thyroid gland, such as parathyroid glands, cervical lymph nodes and so on. The scope of neck ultrasound is larger than that of thyroid ultrasound, including not only the thyroid gland, but also the blood vessels in the neck, superficial lymph nodes, whether there are soft tissue masses and cysts. Patients who are not sure whether they need to have a neck ultrasound or a thyroid ultrasound can go to the hospital and consult with a professional doctor. Patients who need to have a thyroid or neck ultrasound should actively cooperate with the doctor’s operation process.