The sequelae of facial palsy are the parts of facial nerve paralysis that do not recover with the recovery of motor function are called sequelae. Generally, it is a condition in which the duration of facial palsy is more than 3 months, and the condition is delayed due to improper treatment methods or is not cured by multiple methods of treatment. The common types of post-facial palsy complications are facial muscle weakness, facial muscle spasm, joint facial muscle movement, crocodile tear syndrome, and facial muscle fibrous spasm. Facial muscle weakness: facial palsy caused by muscle contraction weakness on the side of the lesion; Facial muscle spasm: mainly manifests as paroxysmal involuntary spasms or convulsions of the facial muscles occurring on one side of the face, occurring in the eye and corner of the mouth, mostly on the side of the lesion. Combined facial muscle movements: movement of the corners of the mouth toward the affected side when the eyes are closed, or the presence of closed eyes on the affected side when the corners of the mouth are moved. Crocodile tear syndrome: facial palsy patients with tears are often accompanied by manifestations of facial muscle spasm or diffuse facial muscle reactions, and the tears become constantly dry, or even unable to flow. Fibrous spasms of the facial muscles: Rapid, non-constantly positioned jerking contractions occur on one side of the facial palsy and are often accompanied by transient eye movements. Facial palsy usually does not leave sequelae after proper treatment. For some patients who are more severely ill, or who do not receive proper treatment, the possibility of sequelae is increased.