As is well known,studying B physics,for both experimental measure and theoretical research ,has three major objectives:searching for CP violation and the evidence of new physics in B meson system,testing the theory of Standard Model and measuring the parameters in it, and studying the fruitful dynamics of QCD.

As a good place for testing the standard model and searching for cp Violation and possiblenew physics beyond the SM, B meson decays are getting more and more interesting and attracting more and more attentions.

Based on so large amount of data we are not only able to probe the origin of CP violation, but to explore rich QCD dynamics involved in exclusive B meson decays.