The right subclavian artery is located in a convex upward bowed line from the superior border of the right sternoclavicular joint to the midpoint of the right clavicle, and this line is the surface projection of the artery. The right subclavian artery is the arterial trunk of the right upper limb. It originates from the trunk of the head and arm, runs along the medial side of the right lung tip and obliquely crosses the top of the right pleura to exit the thorax to the root of the neck, and then arches laterally to reach the outer edge of the right first rib and moves to the axillary artery to enter the axilla. The right subclavian artery is divided into three segments by the right anterior oblique muscle: the first segment is from the head and arm trunk to the inner edge of the right anterior oblique muscle, which is adjacent to the right pleural roof at its posterior and inferior sides; the second segment is behind the right anterior oblique muscle, which is adjacent to the right brachial plexus at its superior side and to the right pulmonary aponeurosis at its posterior and inferior side; and the remaining segment is the third segment, which is also adjacent to the right brachial plexus at its superior side. The right subclavian artery primarily transports blood to the right upper extremity, with branches including the vertebral artery, the internal thoracic artery, the thyrocervical trunk, the costocervical trunk, and the transverse carotid artery, which are distributed to the organs of the head and neck, and the chest wall, to transport blood.