There are many types of complications, for example, one is due to nerve contact during surgery, localized nerve contact during lymph node removal, and removal of surrounding tissues affecting the blood vessels supplying the nerves (nerves are also supplied by blood vessels), which may result in a temporary palsy of the nerves. These factors may produce a temporary paralysis of the nerves. The temporary paralysis recovers in 3 to 6 months. Sometimes one side of the thyroid gland has a problem, and the other side is not moved first, and this side is paralyzed after the operation, but it gets better in a few days. This is a temporary paralysis, and the nerve structure is intact, and it can be recovered. The nerve structure is intact and can be recovered. It is impossible to do the surgery without touching the nerve, pushing the nerve apart may cause paralyzing damage. There is also the factor of nerve degeneration, some people have degeneration of the laryngeal nerve is not the same as the normal nerve, in addition, there are several branches, just like a normal person with five fingers, he has six fingers, this kind of situation is easy to cause damage during the operation, and this kind of damage may not be able to recover. Sometimes it is possible to make some repairs and improve the function a little bit. In our clinic, when we encounter a patient with one side paralyzed, we must protect this side very well when we do the other side surgery. Therefore, the monitoring technique is very important. If we find out that it is safe, we should do it quickly, otherwise both sides will be paralyzed, and we have to cut the trachea, otherwise the patient will be suffocated and can’t breathe. Our clinical judgment is very important, we think that thyroid surgery is a small operation, in fact, it is not right, it is very fine with highly sophisticated technical content of the operation, do a good job will be fine, the next day normal down to the ground to speak, a week out of the hospital, two weeks to go to work, the nerve of the momentary paralysis can also slowly six months to return to normal speech, some people can not be restored to lifelong hoarseness and with the tube on the very troublesome, so try to avoid this! So try to avoid this kind of injury.