Most of the vocal cords that are injured after thyroid cancer surgery can return to normal. It is easy to damage the vocal cords and cause hoarse voice symptoms when giving patients thyroid surgery. After the surgery, you can be treated by vocal cord training and oral vitamin B1, methylcobalamin tablets and other nutritive nerve medications, and your voice will usually improve significantly after half a year. 1. If the vocal cord damage is caused by anesthesia intubation, this is reversible damage, and most of them can be restored to normal after surgery by actively taking oral medication and keeping a light diet. 2. If the vocal cord injury is caused by nerve damage, the recovery is very slow. It is recommended to take treatment under doctor’s guidance and go to the hospital for recheck regularly. In conclusion, most of the vocal cords injured by thyroid cancer can be restored to normal, according to the different causes, active treatment to prevent complications.