Abstract: Abstract: Through the epidemiological survey, this paper discusses the different subtype ADHD children in terms of their emotion, behavior and social functions. 263 high-risk children, who are selected from a large sample of 4500 7-10 years old children using SDQ (Strengths and Difficul-ties Questionnaire), have been clinically assessed with K-SADS-PL scale and DSM-Ⅳdiagnostic criteria, and 119 of them are diagnosed with ADHD. The male and female ratio of the children diagnosed with ADHD is approximately 2.22:1, which means significance gender difference. The mixed ADHD children have a significantly higher score in hyperactivity than children with atten-tion deficit; however, ADHD children have a significantly lower score in social function than children with attention deficit and hyperactivity. 7 years old ADHD children show significantly less hyperactivity than 8 and 9 years old ADHD children. ADHD comorbidity rate is 12.6% and 43.2 percent of ADHD children have learning difficulties.

Key words: ADHD, different subtypes, comorbidity

摘要： 摘要：通过流行病学测查，探讨不同亚型ADHD儿童的情绪、行为和社会功能的差异。采用SDQ（长处与困难问卷）对4500名7-10岁儿童进行大样本筛查，应用K-SADS-PL量表和DSM-Ⅳ诊断标准对其中263名高危儿童进行临床评估，诊断出119名儿童ADHD。诊断出的ADHD儿童中，男性与女性的比率大约为2.22︰1，存在显著的性别差异。混合型儿童ADHD的多动性不能得分显著高于注意缺陷性；混合型ADHD的社会功能得分显著低于注意缺陷型和多动型。7岁儿童ADHD的多动情况显著低于8岁、9岁。ADHD共病率为12.6%，ADHD儿童伴有学习困难的比例为43.2%。

关键词: ADHD, 不同亚型, 共病