Postoperative facial nerve damage may be caused by surgical injury or due to facial neuritis, and targeted treatment is recommended. Common methods include medication and rehabilitation. 1. Surgical injury: During surgery, the facial nerve may be damaged, resulting in symptoms such as crooked mouth and eyes and salivation. In this case, nerve growth factor can be injected to promote nerve recovery, along with the use of neurotrophic drugs for treatment. Commonly, there are vitamin B1, vitamin B12 and so on. 2. Facial neuritis: after surgical treatment, if you do not take good care of the facial nerve, the facial nerve may be invaded by pathogens, which may lead to nerve damage. It is recommended to use glucocorticosteroids and antiviral drugs to eliminate the inflammation, and common drugs include prednisone and acyclovir. Neurotrophic drugs such as methylcobalamin and vitamin B1 can also be used to supplement the treatment. Post-operative facial nerve damage will lead to a greater disturbance in life, you should seek medical attention as soon as possible, under the guidance of the doctor for treatment, and strictly comply with the doctor’s instructions to use medication.