Objective To investigate the behavioral characteristics of mild autism children.Methods The behaviors of 30 mild and 22 severe autism children were evaluated with Childhood Autism Rating Scale(CARS).Results Significant difference in social interaction,emotional reaction,verbal and nonverbal communication and stereotyped behaviors were observed between mild and severe autism children.Abnormal sense,repetitive body movements,aggressive and self-injury behaviors are less common in mild group.The average age at diagnosis is 47.2 months in mild group and 37.8 months in severe group.Conclusion Mild autism children usually showed mild symptoms which make their clinical manifestation atypical,and their age at diagnosis is older than that of severe autism children.

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