A severed nerve can be recovered with timely treatment, such as neurosurgical microsurgery for nerve anastomosis. As long as the treatment is timely, most patients can recover, but the recovery time may be longer, and the possibility of incomplete recovery cannot be ruled out. The regenerative capacity of human nerves is limited and if they are completely cut off and not treated in time, irreversible damage may occur. Patients are advised to go to a regular hospital for rehabilitation treatment, and it may take about three months to recover after surgery with care. For patients with nerve injury, the best recovery period is within six months, and treatment can be combined with acupuncture and physical therapy to prevent complications such as muscle atrophy and joint stiffness. At the same time, attention should be paid to appropriate rehabilitation training to help maximize the recovery of damaged nerves.