If the drug treatment effect is not good or the symptoms are aggravated, nerve injection treatment can be carried out. Injection methods include facial nerve trunk and branch injection, and injection drugs can be alcohol, 654-2, vitamin B 12, etc. In recent years, local intramuscular injection of botulinum toxin A has achieved good results at home and abroad. If the above treatment methods are ineffective, surgery can be performed, and microvascular decompression is more effective.