中文摘要：

[目的／意义]移动互联环境下，用户的跨屏行为逐渐成为常态，对这一新兴用户信息行为的研究现状进行梳理，能为深入了解移动用户的复杂信息行为奠定基础。[方法／过程]在剖析涉及“两点一径”的跨屏行为三要素基础上，整合时间维和任务维对跨屏行为进行分类与描述性界定，并结合情境视角，从跨屏行为特征、行为动因以及行为实现研究3个方面进行综述。[结果／结论]作为新兴的用户行为，移动互联环境下的跨屏行为研究还较为薄弱，尚有较大的探索空间。

英文摘要：

[ Purpose/significance ] Cross screen behavior gradually becomes normal in mobile internet environment. By reviewing on this new information behavior, this paper lays a foundation for further understanding of the mobile user＇ s complex information behavior. [ Method/process ] Based on the analysis of the three elements of cross screen behavior, this paper integrates the time and task dimensions to discuss the classification and descriptive definition of the cross screen behavior. Combined with context perspective, the researches on behavior characteristic, motivation, and implementation of cross screen behavior are summarized. [ Result/conclusion] As the emerging user behavior, the study of cross screen behavior in mobile Internet environment is not enough and there is still a large space to explore.