Treatment principles: incomplete facial palsy in traumatic peripheral facial palsy is mainly observed conservatively; in complete facial palsy with immediate onset, facial nerve exploration surgery should be performed as soon as the general condition is stable and allowed; in late onset facial palsy, surgery should be performed if the ENOG shows 90% degeneration within 6 days; if the ENOG shows 90% degeneration only after 6 days, the prognosis is still good with conservative treatment. Conservative treatment is mainly to give hormones to reduce facial nerve sheath edema, and drugs to improve facial nerve blood supply can be given at the same time. Intraoperatively, attention should be paid to the removal of fibrous scar and bone fragments that hinder facial nerve regeneration in order to provide facial nerve regeneration channels. If the facial nerve has been broken, a nerve graft should be done; if the facial nerve has been atrophied and replaced by fibrous tissue, the following surgical methods can be used: 1. Nerve exchange: facial nerve-sublingual nerve anastomosis, or anastomosis with the paranasal nerve or mandibular nerve motor branch anastomosis; 2. Nerve myotome transplantation: temporalis muscle, thin femoral muscle and chewing muscle transfer; eyelid or orbicularis muscle paralysis can be used with temporalis muscle Fascia or broad fascial suspension or free muscle implantation; 3. VII-VII cranial nerve spanning surgery: because of the long nerve graft, the peroneal nerve is generally the most suitable.