Autism, also known as autism spectrum disorder and Kanner syndrome, is typically characterized by impairments in social interaction, verbal and nonverbal communication, narrow interests, and repetitive stereotypic behaviors. It often shows up gradually in infants and toddlers by 36 months of age, with the typical child being diagnosed at 18 months. The prevalence of autism is about 1%, male: female is (4~6): The symptoms of autism manifest as follows: 1. Social communication disorder: is the core symptom of the disorder. Inability to establish normal interpersonal relationships with people, preferring to play alone or daze, often deaf to instructions: lack of communication skills, such as lack of eye contact with people. Lack of attachment to parents, rarely actively seeking parental care or comfort. Inability to use language and body language to express needs, such as not using their own fingers to point, but holding an adult’s hand to indicate what they want. 2. Narrow interests and repetitive stereotyped behaviors: The child shows extraordinary interest in certain special objects or activities, and therefore exhibits repetitive, stereotyped behaviors or actions, such as spinning and arranging toys. 3. Language communication disorders: Language development is delayed. Some children have normal language development in the early stages and then regress in language and have a dramatic reduction in vocabulary. Repetitive, stereotyped language or self-talk, monotonous vocabulary content, and often incorrect use of personal pronouns. About 80% of the children are mentally retarded: about 5% of the children can show strong ability in some aspects, such as music and memory, especially mechanical memory of numbers, routes, license plates, dates, etc. 5. Some children have sensory abnormalities: special sensitivity to certain sounds, fear or preference, dislike of being hugged or touched. It often manifests as hyperactivity and attention distraction. In addition, tantrums and aggressive self-injurious behaviors are more common. Self-injurious behaviors are mainly manifested as head banging, hand biting, scratching, rubbing, etc.