Autism, also known as autism, is a type of pervasive developmental disorder in children that is characterized by varying degrees of language development disorders, social interaction disorders, narrow range of interests, and repetitive stereotypic behaviors. The etiology of autism is not yet completely clear, and may be related to the following factors: 1. genetic factors, the concordance rate of autism prevalence in children with monozygotic twins is 90%, and 24% for dizygotic twins, suggesting that the disease is related to genetic factors, but the specific mode of inheritance is unknown; 2. perinatal factors, studies have shown that the anxiety and depression of mothers of children with autism during pregnancy, drugs, heavy metals The risk of autism is increased by maternal anxiety and depression during pregnancy, drugs, heavy metals, pollution, and poor lifestyle habits of pregnant women; 3. Immune abnormalities, neuroendocrine and neurotransmitter dysfunctions, such as increased 5-hydroxytryptamine, endorphins, and decreased secretion of adrenocorticotropic hormones; 4. There are cytoarchitectural changes in the left cerebral hemisphere and frontal lobes, cerebellum, hippocampus and amygdala related to cognition, and these changes are associated with the core symptoms of children with autism. After a child is diagnosed with autism, many parents feel self-blame and always wonder if it is because they made a mistake in their parenting style. In fact, the cause of autism is a congenital disorder and is not directly related to the parenting style.