The structure of the brachial plexus is complex, divided into 5 parts: root, trunk, femoral, fasciculus, and branch. There are 5 major branches: axillary, musculocutaneous, radial, median, and ulnar. The brachial plexus includes 5 roots and 3 trunks, C5-C6 nerve roots meet at the outer edge of the anterior oblique muscle and form the superior trunk; C7 forms the middle trunk; C8-T1 forms the inferior trunk. (located on the surface of the 1st rib, each stem is about 1 cm long). Each stem is divided into anterior and posterior strands (located on the surface of the clavicle, each strand is about 1 cm long); each strand forms three bundles, the length of which is about 3 cm, and each bundle is divided into nerve branches at the level of the rostral process, forming the terminal nerve. The total length of the brachial plexus nerve is about 15 cm, with about 150,000 axons. The brachial plexus is located near the shoulder joint, which has a large range of motion, and is adjacent to the artery, which can easily cause damage to the brachial plexus. It is generally divided into upper brachial plexus injury (Erb injury), lower brachial plexus injury (Klumpke injury) and total brachial plexus injury. The injury was an order, and the orthopedic department immediately set up a rescue team. Because of the complex local anatomy of the neck and rich vascular nerves, the slightest mistake could lead to the patient’s death due to vascular injury, while the nerve anastomosis was extremely difficult. With careful preparation, the leading medical team performed emergency cervical vascular nerve exploration, and the patient’s injury was detected and the damaged brachial plexus nerve was repaired in just over one hour. The patient was successfully discharged after the operation.