This paper we discuss some issues about task interruptions.We try to summarize existing experimental results and theoretical results and analysis what these studies show.Then,we hope that our study can make researchers learn what has done about this area .More importantly,we’d like to further explore the direction and focus of future research.In the first place,based on the literture review of previous task interruptions studies,we present task interruptions’ background and theories.The rapid development of Internet technology weaken space-time boundary of traditional environment.Virtual settings emerges in that the interaction and the sense of immersion in network using expand settings from geographical areas to cyberspace.Human’s behavior setting was divided into real settings and virtual settings.Interaction between these behavior settings generates a new environment system-“R-V” mesosystems(“real-virtual” mesosystems).The intermingling of real and virtual behavior programs within “R-V” mesosystems reflects the polyfunctional nature of settings.In these settings,human-computer interavtion(HCI) is common.