It is a normal physiological phenomenon that the thyroid gland moves when a normal person makes the motion of swallowing saliva. The thyroid gland can be divided into the left lobe, the right lobe, and the thyroid isthmus. The isthmus of the thyroid gland is mainly attached to the surface of the cartilaginous ring of the trachea. The thyroid gland moves up and down as the body swallows. Difficulty in swallowing may occur when the thyroid gland is diseased and in more severe cases, such as when a goiter compresses the esophagus, which can make eating and swallowing difficult. When thyroid abnormalities occur, it is recommended to consult a doctor for further color Doppler ultrasound examination of the thyroid gland, to clarify the cause under the guidance of the doctor, and to carry out targeted treatment.