The brachial plexus nerve is composed of nerve roots from the cervical 5 to thoracic 1 segments. The nerve roots of the above segments form the superior, middle and inferior trunks of the brachial plexus, each of which is divided into anterior and posterior strands. The common causes of brachial plexus injury are inflammation, trauma and compression. Inflammation-induced brachial plexus injury is treated conservatively, usually with vitamin B1, methylcobalamin and other nerve-nourishing drugs, and also with hormones to reduce the inflammatory response and compression symptoms that cause brachial plexus nerve injury. If the condition permits, it is recommended to try to release the disease causing the compression, such as cervical rib caused by cervical 8 thoracic 1 nerve root injury, you can surgically remove the cervical rib. If the injury is relatively mild, the same conservative treatment plan of nerve nutrition and hormone can be taken, if the injury is very serious, surgery can be taken.