There is a carotid artery in the neck, which is a large artery that beats in synchrony with the heart and is evident on palpation at 2 cm of parathyroid cartilage opening. It is commonly used clinically to determine whether the heart is in cardiac arrest and is considered to be a normal carotid vascular pulsation. If it is beating fast, further ECG examination or cardiac ultrasound can be improved to clarify whether there is an underlying disease that causes abnormal cardiac function. Thyroid disease can also be considered, which is caused by accelerated blood flow and overabundance of blood flow in the thyroid gland. You can improve the neck vascular ultrasound, thyroid ultrasound, thyroid function and other related examinations to see if there are any related diseases.