Facial palsy refers to the paralysis of the facial expression muscles caused by damage to the facial nerve. It is manifested by a series of facial deformities: loss of facial expression, crookedness of the corners of the mouth, and the possibility of blindness due to stabbing pain in the eyes, tearing, severe formation of corneal inflammation, and even refractory corneal ulcers caused by the inability to close the eyes. These damages not only bring physical pain to the patients, but also a heavy psychological burden, making it impossible for them to live and work normally. Because of this, the earlier the treatment for facial palsy, the better. So what department should I see when facial palsy occurs? Facial palsy can be caused by a variety of reasons, so the treatment of facial palsy involves several clinical specialties: neurology, ophthalmology and plastic surgery. Neurology and otolaryngology treat the primary disease (such as facial palsy caused by viral infection or otitis media) to recover from facial palsy, for example, sudden onset of facial palsy of unknown origin should be treated by the above two clinical departments. Patients with facial palsy caused by early trauma or post-surgery (especially tumor surgery), as well as those who have been paralyzed for a long time (>2 years), and all types of facial palsy sequelae (inability to close eyelids, eye-mouth linkage, etc.), etc., can be helped by a plastic surgeon to obtain the maximum possible recovery in form and function. However, the efficacy of facial palsy treatment is variable: some patients can achieve a near-normal recovery, while others do not change at all after treatment. What exactly is the reason for such a large variation? First of all, the type of facial palsy the patient suffers from affects the treatment effect: for example, Bell’s palsy accounts for the highest proportion of the onset of facial palsy, and this type of facial palsy is manifested as sudden facial palsy. If the facial palsy can be clearly excluded from tumor, trauma or ear disease through examination by a specialist, then most of them can get a good recovery after timely treatment. Secondly, the time of facial palsy treatment: timely and effective treatment is the key to achieve good results. Especially for patients with facial palsy caused by trauma or surgery, early restoration of facial nerve innervation to the paralyzed muscles is likely to result in the best recovery of the patient’s facial function. If the patient does not receive timely repair, then the eventual restoration effect will gradually decay with longer intervals until the nerve repair is lost. In addition, the skill and experience of the surgeon, as well as the corresponding correct treatment philosophy and the appropriate choice of treatment method, are also very important in influencing the final outcome of the patient with facial palsy. This is because the treatment of facial palsy can involve other specialties such as neurology and pentacology, so the plastic surgeon in charge of facial palsy treatment is required to have adequate expertise in facial palsy treatment. Only then can a detailed preoperative examination and evaluation be performed to determine if the patient is a good candidate for treatment at the plastic surgery department. The treatment of facial palsy is a systematic and holistic treatment that ranges from eye closure to mouth movement, from facial symmetry at rest to symmetry during smiling activity. In addition, the treatment of facial palsy should also be an individualized sequential treatment: a treatment plan is developed that meets the individual’s requirements and is carried out gradually in stages. The treatment plan may include both a dynamic repair of facial palsy and some cosmetic repair procedures to improve the facial appearance. The scope of treatment includes all types of facial palsy caused by trauma or surgery, advanced facial palsy (paralysis longer than 2 years), sequelae of facial palsy (such as linkage of facial muscles, incomplete eye closure), and complex facial palsy (bilateral facial palsy, paralysis of orbicularis oris muscle, etc.). In terms of clinical treatment methods, a comprehensive, sequential and individualized revision can be performed by applying various techniques of microsurgery and cosmetic surgery to the patient’s specific situation, ultimately restoring a considerable degree of symmetry and aesthetics to the patient’s face as much as possible.