Brachial plexus nerve injuries can be caused by trauma, car accidents, falls from height, etc., or can be caused by knife cuts. If the nerve injury is caused by a knife cut, early surgery is recommended to connect the severed ends for rehabilitation. Transcranial magnetic stimulation is the most important part of rehabilitation, which can help the synapses to grow and connect the two damaged nerves as soon as possible. Acupuncture, acupuncture point injections, and manual therapy are also recommended. It is best to combine them with Chinese herbal medicine, which can be used internally and externally. Then fine motor training, such as holding and pinching small bouncing balls, holding and pinching chopsticks and pens for writing and other fine operations, will be performed to train the sequelae of brachial plexus nerve injury.