It was our great pleasure to hold the 2nd International Symposium onAutomated Te- nology on Veri?cation and Analysis (ATVA) in Taipei, Taiwan, ROC, October 31– November3,2004.TheseriesofATVAmeetingsisintendedforthepromotionofrelated research in eastern Asia. In the last decade, automated technology on veri?cation has become the new strength in industry and brought forward various hot research activities in both Europe and USA. In comparison, easternAsia has been quiet in the forum.With more and more IC design houses moving from SiliconValley to easternAsia, we believe this is a good time to start cultivating related research activities in the region. TheemphasisoftheATVAworkshopseriesisonvariousmechanicalandinformative techniques, which can give engineers valuable feedback to fast converge their designs according to the speci?cations. The scope of interest contains the following research - eas: model-checking theory, theorem-proving theory, state-space reduction techniques, languages in automated veri?cation, parametric analysis, optimization, formal perf- mance analysis, real-time systems, embedded systems, in?nite-state systems, Petri nets, UML, synthesis, tools, and practice in industry.