Abstract: Despite the high prevalence and harmfulness of autism spectrum disorders （ASD）， early intervention can apparently improve symptoms. Early detection and diagnosis of ASD has very important practical significance. Therefore， the paper summarizes the application and development of an interactive level 2 screening instrument for ASD: the Screening Tool for Autism in Two-Year-Olds （STAT）， aiming to provide some theoretical basis for the application and promotion of STAT in China， and then improve the opportunity for early screening， diagnosis and intervention of ASD. STAT has strong and stable psychometric properties， and it can also directly observe children's key behaviors. It is easy to operate， with standardized evaluation and easy to manage， too. It can provide basis for early diagnosis and intervention of ASD， and has a promising clinical application.

Key words: autism spectrum disorder, the screening tool for autism in two-year-olds, screening instrument

摘要： 鉴于孤独症谱系障碍（ASD）患病率高、危害性大，但是早期干预可显著改善症状，所以早期识别并诊断ASD具有非常重要的现实意义。因此，文章对ASD交互式二级筛查工具——幼儿期孤独症筛查工具（STAT）的应用及发展予以总结阐述，旨在为幼儿期孤独症筛查工具（STAT）在中国的应用及推广提供一定理论依据，进而提高ASD早识别、早诊断、早干预的机会。STAT心理测量学特性好且稳定、可直接观察儿童关键行为、操作简便、评分标准化、易于管理，可为ASD早期诊断及干预提供依据，临床应用有前景。

关键词: 孤独症谱系障碍, 幼儿期孤独症筛查工具, 筛查工具