This study is design to evaluate the efficacy of the Treatment and Education of Autistic and Communication Handicapped Children (TEACCH) on the rehabilitation for preschool children with autism spectrum disorders (ASD) in China.A case-randomized controlled study was conducted.Sixty children diagnosed with ASD between 36 and 90 months of age were randomly assigned to the a TEACCH intervention group or a control group.The control group was subjected to regular rehabilitation training, the TEACCH group carried out TEACCH training besides regular rehabilitation training for 6 months. Chinese Version of Psycho-educational Profile-3rd edition (CPEP-3) was used to evaluate the effectiveness of TEACCH rehabilitation training.

Statistical analysis plan:The results were analyze using descriptive, t-test and ANOVA.

Inclusion Criteria:

• diagnosed by two children's psychiatrists above the level of the attending physician, in accordance with the diagnostic criteria of DSM-V (Diagnostic and Statistical Manual of Mental Disorder, fifth revised) children's autism spectrum disorder issued by the United States in 2013. Diagnostic screening scales include Autism Behavior Checklist (ABC), Childhood Autism Rating Scale (CARS), and Modified Checklist for Autism in Toddlers (M-CHAT) (for under 4 years old), Social Communication Questionnaire (SCQ) (for over 4 years old), all children' scores above the scale suggest ASD performance;
• able to cooperate with clinical evaluation and related examinations, and the guardian signs the informed consent to agree to participate in the study.

Exclusion Criteria:

• combined with other mental illnesses such as ADHD, with major physical and nervous system diseases;
• serious self-harm.