The tics can be divided into motor tics and vocal tics: 1. Simple motor tics are sudden, rapid, isolated and meaningless movements, such as blinking, eyebrow squeezing, forehead wrinkling, nose sucking, mouth opening, neck stretching, head shaking, shoulder shrugging, etc. Complex motor tics are sudden, complex behavioral movements that seem to have a purpose. Complex motor tics are sudden, seemingly purposeful and complex behavioral movements, such as “making faces”, eye rolling, hand clapping, bending, twisting trunk, stamping feet, etc. Complex motor tics also include imitation behaviors and molestation behaviors. The simple vocal twitching is characterized by repeatedly making involuntary, meaningless, monotonous sounds, such as “um”, “ah”, etc., or sounds similar to animal calls, throat clearing, nasal aspiration, etc. Complex vocal tics refer to the repetition of meaningful speech sounds, including words, phrases, phrases, obscenities, imitative language and repetitive language. According to the International Classification of Diseases, 10th edition, tic disorders are classified into the following three types: 1. Transient tic disorder (1) starts in childhood or early adolescence, and is most common in children aged 4 to 5. (2) There are recurrent, involuntary, repetitive, rapid, purposeless single or multi-part motor twitches, or vocal twitches, with blinking, grimacing or head twitches being more common. (3) The twitching can be restrained by will for a short period of time (minutes to hours) and disappears after falling asleep, and examination fails to reveal neurological deficits. (4) Twitching symptoms appear several times in a day, almost daily, and last at least 2 weeks, but last no more than 1 year. (5) Muscle spasms caused by extra-pyramidal neurological disorders and other causes are excluded. (2) Chronic motor or vocal twitching disorder (1) Recurrent, involuntary, repetitive, rapid, purposeless twitching, with no more than three muscle groups at any one time; (2) Motor twitching or vocal twitching, but not both, during the course of the disease; (3) The intensity of the twitching does not change for weeks or months; (4) The twitching can be restrained by will for several minutes to several hours; (5) The disease lasts at least (7) Excluding chronic extrapyramidal neuropathy, myoclonus, facial spasms and psychiatric disorders. -(2) Recurrent, involuntary, repetitive, rapid, purposeless twitches affecting multiple muscle groups; (3) Multiple twitches and one or more vocal twitches appearing simultaneously at some point, but not necessarily at the same time; (4) Ability to be restrained by will for minutes to hours; (5) Intensity of symptoms varying over weeks or months; (6) (6) Twitching occurs several times a day, almost every day. (7) Exclusion of chorea minor, hepatomegaly, epileptic myoclonic seizures, drug-induced involuntary movements and other extrapyramidal pathologies. IV. Treatment The prognosis of different types of tic disorders is different, and the principles of treatment are also different. Transient tic disorder generally has a good prognosis and most of them can get better on their own. Generally speaking, for those with mild tic symptoms and little impact on the child’s life, no medication is needed, and psychological-behavioral interventions are the main focus. During the treatment process, attention should be paid to finding the possible related somatic or psychosocial factors and giving proper guidance. Parents should be careful to avoid reinforcing symptoms due to their excessive attention. If the twitching symptoms are very frequent or increasingly complex and variable in form, medication may be given. Chronic motor or vocal tic disorders generally do not require special treatment, especially for those whose symptoms have been fixed for a long time and have formed habits such as throat clearing or blinking tics in adults, which do not affect their daily life, study or work, and generally do not require medication. Multiple tic disorder, Tourette’s syndrome or tic-obfuscation syndrome, often has a slowly progressive course, with fluctuating symptoms and new symptoms replacing old ones. The severity of symptoms varies, with milder cases causing little interference with school and life and allowing school to continue as usual; severe cases interfere with daily life and learning, especially with the release of behavioral symptoms such as attention deficit hyperactivity, obsessive-compulsive and other behavioral disorders. Treatment requires a combination of medication and psychological-behavioral therapy.